root/drivers/net/ethernet/intel/ice/ice_virtchnl_pf.c

DEFINITIONS

1. ice_err_to_virt_err
2. ice_vc_vf_broadcast
3. ice_set_pfe_link
4. ice_set_pfe_link_forced
5. ice_vc_notify_vf_link_state
6. ice_free_vf_res
7. ice_dis_vf_mappings
8. ice_sriov_free_msix_res
9. ice_set_vf_state_qs_dis
10. ice_dis_vf_qs
11. ice_free_vfs
12. ice_trigger_vf_reset
13. ice_vsi_set_pvid_fill_ctxt
14. ice_vsi_kill_pvid_fill_ctxt
15. ice_vsi_manage_pvid
16. ice_vf_vsi_setup
17. ice_calc_vf_first_vector_idx
18. ice_alloc_vsi_res
19. ice_alloc_vf_res
20. ice_ena_vf_mappings
21. ice_determine_res
22. ice_calc_vf_reg_idx
23. ice_get_max_valid_res_idx
24. ice_sriov_set_msix_res
25. ice_check_avail_res
26. ice_cleanup_and_realloc_vf
27. ice_vf_set_vsi_promisc
28. ice_config_res_vfs
29. ice_reset_all_vfs
30. ice_reset_vf
31. ice_vc_notify_link_state
32. ice_vc_notify_reset
33. ice_vc_notify_vf_reset
34. ice_alloc_vfs
35. ice_pf_state_is_nominal
36. ice_pci_sriov_ena
37. ice_sriov_configure
38. ice_process_vflr_event
39. ice_vc_dis_vf
40. ice_vc_send_msg_to_vf
41. ice_vc_get_ver_msg
42. ice_vc_get_vf_res_msg
43. ice_vc_reset_vf_msg
44. ice_find_vsi_from_id
45. ice_vc_isvalid_vsi_id
46. ice_vc_isvalid_q_id
47. ice_vc_isvalid_ring_len
48. ice_vc_config_rss_key
49. ice_vc_config_rss_lut
50. ice_vc_get_stats_msg
51. ice_vc_ena_qs_msg
52. ice_vc_dis_qs_msg
53. ice_vc_cfg_irq_map_msg
54. ice_vc_cfg_qs_msg
55. ice_is_vf_trusted
56. ice_can_vf_change_mac
57. ice_vc_handle_mac_addr_msg
58. ice_vc_add_mac_addr_msg
59. ice_vc_del_mac_addr_msg
60. ice_vc_request_qs_msg
61. ice_set_vf_port_vlan
62. ice_vc_process_vlan_msg
63. ice_vc_add_vlan_msg
64. ice_vc_remove_vlan_msg
65. ice_vc_ena_vlan_stripping
66. ice_vc_dis_vlan_stripping
67. ice_vc_process_vf_msg
68. ice_get_vf_cfg
69. ice_set_vf_spoofchk
70. ice_set_vf_mac
71. ice_set_vf_trust
72. ice_set_vf_link_state

   1 // SPDX-License-Identifier: GPL-2.0
   2 /* Copyright (c) 2018, Intel Corporation. */
   3 
   4 #include "ice.h"
   5 #include "ice_lib.h"
   6 
   7 /**
   8  * ice_err_to_virt err - translate errors for VF return code
   9  * @ice_err: error return code
  10  */
  11 static enum virtchnl_status_code ice_err_to_virt_err(enum ice_status ice_err)
  12 {
  13         switch (ice_err) {
  14         case ICE_SUCCESS:
  15                 return VIRTCHNL_STATUS_SUCCESS;
  16         case ICE_ERR_BAD_PTR:
  17         case ICE_ERR_INVAL_SIZE:
  18         case ICE_ERR_DEVICE_NOT_SUPPORTED:
  19         case ICE_ERR_PARAM:
  20         case ICE_ERR_CFG:
  21                 return VIRTCHNL_STATUS_ERR_PARAM;
  22         case ICE_ERR_NO_MEMORY:
  23                 return VIRTCHNL_STATUS_ERR_NO_MEMORY;
  24         case ICE_ERR_NOT_READY:
  25         case ICE_ERR_RESET_FAILED:
  26         case ICE_ERR_FW_API_VER:
  27         case ICE_ERR_AQ_ERROR:
  28         case ICE_ERR_AQ_TIMEOUT:
  29         case ICE_ERR_AQ_FULL:
  30         case ICE_ERR_AQ_NO_WORK:
  31         case ICE_ERR_AQ_EMPTY:
  32                 return VIRTCHNL_STATUS_ERR_ADMIN_QUEUE_ERROR;
  33         default:
  34                 return VIRTCHNL_STATUS_ERR_NOT_SUPPORTED;
  35         }
  36 }
  37 
  38 /**
  39  * ice_vc_vf_broadcast - Broadcast a message to all VFs on PF
  40  * @pf: pointer to the PF structure
  41  * @v_opcode: operation code
  42  * @v_retval: return value
  43  * @msg: pointer to the msg buffer
  44  * @msglen: msg length
  45  */
  46 static void
  47 ice_vc_vf_broadcast(struct ice_pf *pf, enum virtchnl_ops v_opcode,
  48                     enum virtchnl_status_code v_retval, u8 *msg, u16 msglen)
  49 {
  50         struct ice_hw *hw = &pf->hw;
  51         struct ice_vf *vf = pf->vf;
  52         int i;
  53 
  54         for (i = 0; i < pf->num_alloc_vfs; i++, vf++) {
  55                 /* Not all vfs are enabled so skip the ones that are not */
  56                 if (!test_bit(ICE_VF_STATE_INIT, vf->vf_states) &&
  57                     !test_bit(ICE_VF_STATE_ACTIVE, vf->vf_states))
  58                         continue;
  59 
  60                 /* Ignore return value on purpose - a given VF may fail, but
  61                  * we need to keep going and send to all of them
  62                  */
  63                 ice_aq_send_msg_to_vf(hw, vf->vf_id, v_opcode, v_retval, msg,
  64                                       msglen, NULL);
  65         }
  66 }
  67 
  68 /**
  69  * ice_set_pfe_link - Set the link speed/status of the virtchnl_pf_event
  70  * @vf: pointer to the VF structure
  71  * @pfe: pointer to the virtchnl_pf_event to set link speed/status for
  72  * @ice_link_speed: link speed specified by ICE_AQ_LINK_SPEED_*
  73  * @link_up: whether or not to set the link up/down
  74  */
  75 static void
  76 ice_set_pfe_link(struct ice_vf *vf, struct virtchnl_pf_event *pfe,
  77                  int ice_link_speed, bool link_up)
  78 {
  79         if (vf->driver_caps & VIRTCHNL_VF_CAP_ADV_LINK_SPEED) {
  80                 pfe->event_data.link_event_adv.link_status = link_up;
  81                 /* Speed in Mbps */
  82                 pfe->event_data.link_event_adv.link_speed =
  83                         ice_conv_link_speed_to_virtchnl(true, ice_link_speed);
  84         } else {
  85                 pfe->event_data.link_event.link_status = link_up;
  86                 /* Legacy method for virtchnl link speeds */
  87                 pfe->event_data.link_event.link_speed =
  88                         (enum virtchnl_link_speed)
  89                         ice_conv_link_speed_to_virtchnl(false, ice_link_speed);
  90         }
  91 }
  92 
  93 /**
  94  * ice_set_pfe_link_forced - Force the virtchnl_pf_event link speed/status
  95  * @vf: pointer to the VF structure
  96  * @pfe: pointer to the virtchnl_pf_event to set link speed/status for
  97  * @link_up: whether or not to set the link up/down
  98  */
  99 static void
 100 ice_set_pfe_link_forced(struct ice_vf *vf, struct virtchnl_pf_event *pfe,
 101                         bool link_up)
 102 {
 103         u16 link_speed;
 104 
 105         if (link_up)
 106                 link_speed = ICE_AQ_LINK_SPEED_100GB;
 107         else
 108                 link_speed = ICE_AQ_LINK_SPEED_UNKNOWN;
 109 
 110         ice_set_pfe_link(vf, pfe, link_speed, link_up);
 111 }
 112 
 113 /**
 114  * ice_vc_notify_vf_link_state - Inform a VF of link status
 115  * @vf: pointer to the VF structure
 116  *
 117  * send a link status message to a single VF
 118  */
 119 static void ice_vc_notify_vf_link_state(struct ice_vf *vf)
 120 {
 121         struct virtchnl_pf_event pfe = { 0 };
 122         struct ice_link_status *ls;
 123         struct ice_pf *pf = vf->pf;
 124         struct ice_hw *hw;
 125 
 126         hw = &pf->hw;
 127         ls = &hw->port_info->phy.link_info;
 128 
 129         pfe.event = VIRTCHNL_EVENT_LINK_CHANGE;
 130         pfe.severity = PF_EVENT_SEVERITY_INFO;
 131 
 132         /* Always report link is down if the VF queues aren't enabled */
 133         if (!vf->num_qs_ena)
 134                 ice_set_pfe_link(vf, &pfe, ICE_AQ_LINK_SPEED_UNKNOWN, false);
 135         else if (vf->link_forced)
 136                 ice_set_pfe_link_forced(vf, &pfe, vf->link_up);
 137         else
 138                 ice_set_pfe_link(vf, &pfe, ls->link_speed, ls->link_info &
 139                                  ICE_AQ_LINK_UP);
 140 
 141         ice_aq_send_msg_to_vf(hw, vf->vf_id, VIRTCHNL_OP_EVENT,
 142                               VIRTCHNL_STATUS_SUCCESS, (u8 *)&pfe,
 143                               sizeof(pfe), NULL);
 144 }
 145 
 146 /**
 147  * ice_free_vf_res - Free a VF's resources
 148  * @vf: pointer to the VF info
 149  */
 150 static void ice_free_vf_res(struct ice_vf *vf)
 151 {
 152         struct ice_pf *pf = vf->pf;
 153         int i, last_vector_idx;
 154 
 155         /* First, disable VF's configuration API to prevent OS from
 156          * accessing the VF's VSI after it's freed or invalidated.
 157          */
 158         clear_bit(ICE_VF_STATE_INIT, vf->vf_states);
 159 
 160         /* free VSI and disconnect it from the parent uplink */
 161         if (vf->lan_vsi_idx) {
 162                 ice_vsi_release(pf->vsi[vf->lan_vsi_idx]);
 163                 vf->lan_vsi_idx = 0;
 164                 vf->lan_vsi_num = 0;
 165                 vf->num_mac = 0;
 166         }
 167 
 168         last_vector_idx = vf->first_vector_idx + pf->num_vf_msix - 1;
 169         /* Disable interrupts so that VF starts in a known state */
 170         for (i = vf->first_vector_idx; i <= last_vector_idx; i++) {
 171                 wr32(&pf->hw, GLINT_DYN_CTL(i), GLINT_DYN_CTL_CLEARPBA_M);
 172                 ice_flush(&pf->hw);
 173         }
 174         /* reset some of the state variables keeping track of the resources */
 175         clear_bit(ICE_VF_STATE_MC_PROMISC, vf->vf_states);
 176         clear_bit(ICE_VF_STATE_UC_PROMISC, vf->vf_states);
 177 }
 178 
 179 /**
 180  * ice_dis_vf_mappings
 181  * @vf: pointer to the VF structure
 182  */
 183 static void ice_dis_vf_mappings(struct ice_vf *vf)
 184 {
 185         struct ice_pf *pf = vf->pf;
 186         struct ice_vsi *vsi;
 187         int first, last, v;
 188         struct ice_hw *hw;
 189 
 190         hw = &pf->hw;
 191         vsi = pf->vsi[vf->lan_vsi_idx];
 192 
 193         wr32(hw, VPINT_ALLOC(vf->vf_id), 0);
 194         wr32(hw, VPINT_ALLOC_PCI(vf->vf_id), 0);
 195 
 196         first = vf->first_vector_idx;
 197         last = first + pf->num_vf_msix - 1;
 198         for (v = first; v <= last; v++) {
 199                 u32 reg;
 200 
 201                 reg = (((1 << GLINT_VECT2FUNC_IS_PF_S) &
 202                         GLINT_VECT2FUNC_IS_PF_M) |
 203                        ((hw->pf_id << GLINT_VECT2FUNC_PF_NUM_S) &
 204                         GLINT_VECT2FUNC_PF_NUM_M));
 205                 wr32(hw, GLINT_VECT2FUNC(v), reg);
 206         }
 207 
 208         if (vsi->tx_mapping_mode == ICE_VSI_MAP_CONTIG)
 209                 wr32(hw, VPLAN_TX_QBASE(vf->vf_id), 0);
 210         else
 211                 dev_err(&pf->pdev->dev,
 212                         "Scattered mode for VF Tx queues is not yet implemented\n");
 213 
 214         if (vsi->rx_mapping_mode == ICE_VSI_MAP_CONTIG)
 215                 wr32(hw, VPLAN_RX_QBASE(vf->vf_id), 0);
 216         else
 217                 dev_err(&pf->pdev->dev,
 218                         "Scattered mode for VF Rx queues is not yet implemented\n");
 219 }
 220 
 221 /**
 222  * ice_sriov_free_msix_res - Reset/free any used MSIX resources
 223  * @pf: pointer to the PF structure
 224  *
 225  * If MSIX entries from the pf->irq_tracker were needed then we need to
 226  * reset the irq_tracker->end and give back the entries we needed to
 227  * num_avail_sw_msix.
 228  *
 229  * If no MSIX entries were taken from the pf->irq_tracker then just clear
 230  * the pf->sriov_base_vector.
 231  *
 232  * Returns 0 on success, and -EINVAL on error.
 233  */
 234 static int ice_sriov_free_msix_res(struct ice_pf *pf)
 235 {
 236         struct ice_res_tracker *res;
 237 
 238         if (!pf)
 239                 return -EINVAL;
 240 
 241         res = pf->irq_tracker;
 242         if (!res)
 243                 return -EINVAL;
 244 
 245         /* give back irq_tracker resources used */
 246         if (pf->sriov_base_vector < res->num_entries) {
 247                 res->end = res->num_entries;
 248                 pf->num_avail_sw_msix +=
 249                         res->num_entries - pf->sriov_base_vector;
 250         }
 251 
 252         pf->sriov_base_vector = 0;
 253 
 254         return 0;
 255 }
 256 
 257 /**
 258  * ice_set_vf_state_qs_dis - Set VF queues state to disabled
 259  * @vf: pointer to the VF structure
 260  */
 261 void ice_set_vf_state_qs_dis(struct ice_vf *vf)
 262 {
 263         /* Clear Rx/Tx enabled queues flag */
 264         bitmap_zero(vf->txq_ena, ICE_MAX_BASE_QS_PER_VF);
 265         bitmap_zero(vf->rxq_ena, ICE_MAX_BASE_QS_PER_VF);
 266         vf->num_qs_ena = 0;
 267         clear_bit(ICE_VF_STATE_QS_ENA, vf->vf_states);
 268 }
 269 
 270 /**
 271  * ice_dis_vf_qs - Disable the VF queues
 272  * @vf: pointer to the VF structure
 273  */
 274 static void ice_dis_vf_qs(struct ice_vf *vf)
 275 {
 276         struct ice_pf *pf = vf->pf;
 277         struct ice_vsi *vsi;
 278 
 279         vsi = pf->vsi[vf->lan_vsi_idx];
 280 
 281         ice_vsi_stop_lan_tx_rings(vsi, ICE_NO_RESET, vf->vf_id);
 282         ice_vsi_stop_rx_rings(vsi);
 283         ice_set_vf_state_qs_dis(vf);
 284 }
 285 
 286 /**
 287  * ice_free_vfs - Free all VFs
 288  * @pf: pointer to the PF structure
 289  */
 290 void ice_free_vfs(struct ice_pf *pf)
 291 {
 292         struct ice_hw *hw = &pf->hw;
 293         int tmp, i;
 294 
 295         if (!pf->vf)
 296                 return;
 297 
 298         while (test_and_set_bit(__ICE_VF_DIS, pf->state))
 299                 usleep_range(1000, 2000);
 300 
 301         /* Avoid wait time by stopping all VFs at the same time */
 302         for (i = 0; i < pf->num_alloc_vfs; i++)
 303                 if (test_bit(ICE_VF_STATE_QS_ENA, pf->vf[i].vf_states))
 304                         ice_dis_vf_qs(&pf->vf[i]);
 305 
 306         /* Disable IOV before freeing resources. This lets any VF drivers
 307          * running in the host get themselves cleaned up before we yank
 308          * the carpet out from underneath their feet.
 309          */
 310         if (!pci_vfs_assigned(pf->pdev))
 311                 pci_disable_sriov(pf->pdev);
 312         else
 313                 dev_warn(&pf->pdev->dev, "VFs are assigned - not disabling SR-IOV\n");
 314 
 315         tmp = pf->num_alloc_vfs;
 316         pf->num_vf_qps = 0;
 317         pf->num_alloc_vfs = 0;
 318         for (i = 0; i < tmp; i++) {
 319                 if (test_bit(ICE_VF_STATE_INIT, pf->vf[i].vf_states)) {
 320                         /* disable VF qp mappings and set VF disable state */
 321                         ice_dis_vf_mappings(&pf->vf[i]);
 322                         set_bit(ICE_VF_STATE_DIS, pf->vf[i].vf_states);
 323                         ice_free_vf_res(&pf->vf[i]);
 324                 }
 325         }
 326 
 327         if (ice_sriov_free_msix_res(pf))
 328                 dev_err(&pf->pdev->dev,
 329                         "Failed to free MSIX resources used by SR-IOV\n");
 330 
 331         devm_kfree(&pf->pdev->dev, pf->vf);
 332         pf->vf = NULL;
 333 
 334         /* This check is for when the driver is unloaded while VFs are
 335          * assigned. Setting the number of VFs to 0 through sysfs is caught
 336          * before this function ever gets called.
 337          */
 338         if (!pci_vfs_assigned(pf->pdev)) {
 339                 int vf_id;
 340 
 341                 /* Acknowledge VFLR for all VFs. Without this, VFs will fail to
 342                  * work correctly when SR-IOV gets re-enabled.
 343                  */
 344                 for (vf_id = 0; vf_id < tmp; vf_id++) {
 345                         u32 reg_idx, bit_idx;
 346 
 347                         reg_idx = (hw->func_caps.vf_base_id + vf_id) / 32;
 348                         bit_idx = (hw->func_caps.vf_base_id + vf_id) % 32;
 349                         wr32(hw, GLGEN_VFLRSTAT(reg_idx), BIT(bit_idx));
 350                 }
 351         }
 352         clear_bit(__ICE_VF_DIS, pf->state);
 353         clear_bit(ICE_FLAG_SRIOV_ENA, pf->flags);
 354 }
 355 
 356 /**
 357  * ice_trigger_vf_reset - Reset a VF on HW
 358  * @vf: pointer to the VF structure
 359  * @is_vflr: true if VFLR was issued, false if not
 360  * @is_pfr: true if the reset was triggered due to a previous PFR
 361  *
 362  * Trigger hardware to start a reset for a particular VF. Expects the caller
 363  * to wait the proper amount of time to allow hardware to reset the VF before
 364  * it cleans up and restores VF functionality.
 365  */
 366 static void ice_trigger_vf_reset(struct ice_vf *vf, bool is_vflr, bool is_pfr)
 367 {
 368         struct ice_pf *pf = vf->pf;
 369         u32 reg, reg_idx, bit_idx;
 370         struct ice_hw *hw;
 371         int vf_abs_id, i;
 372 
 373         hw = &pf->hw;
 374         vf_abs_id = vf->vf_id + hw->func_caps.vf_base_id;
 375 
 376         /* Inform VF that it is no longer active, as a warning */
 377         clear_bit(ICE_VF_STATE_ACTIVE, vf->vf_states);
 378 
 379         /* Disable VF's configuration API during reset. The flag is re-enabled
 380          * in ice_alloc_vf_res(), when it's safe again to access VF's VSI.
 381          * It's normally disabled in ice_free_vf_res(), but it's safer
 382          * to do it earlier to give some time to finish to any VF config
 383          * functions that may still be running at this point.
 384          */
 385         clear_bit(ICE_VF_STATE_INIT, vf->vf_states);
 386 
 387         /* VF_MBX_ARQLEN is cleared by PFR, so the driver needs to clear it
 388          * in the case of VFR. If this is done for PFR, it can mess up VF
 389          * resets because the VF driver may already have started cleanup
 390          * by the time we get here.
 391          */
 392         if (!is_pfr)
 393                 wr32(hw, VF_MBX_ARQLEN(vf_abs_id), 0);
 394 
 395         /* In the case of a VFLR, the HW has already reset the VF and we
 396          * just need to clean up, so don't hit the VFRTRIG register.
 397          */
 398         if (!is_vflr) {
 399                 /* reset VF using VPGEN_VFRTRIG reg */
 400                 reg = rd32(hw, VPGEN_VFRTRIG(vf->vf_id));
 401                 reg |= VPGEN_VFRTRIG_VFSWR_M;
 402                 wr32(hw, VPGEN_VFRTRIG(vf->vf_id), reg);
 403         }
 404         /* clear the VFLR bit in GLGEN_VFLRSTAT */
 405         reg_idx = (vf_abs_id) / 32;
 406         bit_idx = (vf_abs_id) % 32;
 407         wr32(hw, GLGEN_VFLRSTAT(reg_idx), BIT(bit_idx));
 408         ice_flush(hw);
 409 
 410         wr32(hw, PF_PCI_CIAA,
 411              VF_DEVICE_STATUS | (vf_abs_id << PF_PCI_CIAA_VF_NUM_S));
 412         for (i = 0; i < ICE_PCI_CIAD_WAIT_COUNT; i++) {
 413                 reg = rd32(hw, PF_PCI_CIAD);
 414                 /* no transactions pending so stop polling */
 415                 if ((reg & VF_TRANS_PENDING_M) == 0)
 416                         break;
 417 
 418                 dev_err(&pf->pdev->dev,
 419                         "VF %d PCI transactions stuck\n", vf->vf_id);
 420                 udelay(ICE_PCI_CIAD_WAIT_DELAY_US);
 421         }
 422 }
 423 
 424 /**
 425  * ice_vsi_set_pvid_fill_ctxt - Set VSI ctxt for add PVID
 426  * @ctxt: the VSI ctxt to fill
 427  * @vid: the VLAN ID to set as a PVID
 428  */
 429 static void ice_vsi_set_pvid_fill_ctxt(struct ice_vsi_ctx *ctxt, u16 vid)
 430 {
 431         ctxt->info.vlan_flags = (ICE_AQ_VSI_VLAN_MODE_UNTAGGED |
 432                                  ICE_AQ_VSI_PVLAN_INSERT_PVID |
 433                                  ICE_AQ_VSI_VLAN_EMOD_STR);
 434         ctxt->info.pvid = cpu_to_le16(vid);
 435         ctxt->info.sw_flags2 |= ICE_AQ_VSI_SW_FLAG_RX_VLAN_PRUNE_ENA;
 436         ctxt->info.valid_sections = cpu_to_le16(ICE_AQ_VSI_PROP_VLAN_VALID |
 437                                                 ICE_AQ_VSI_PROP_SW_VALID);
 438 }
 439 
 440 /**
 441  * ice_vsi_kill_pvid_fill_ctxt - Set VSI ctx for remove PVID
 442  * @ctxt: the VSI ctxt to fill
 443  */
 444 static void ice_vsi_kill_pvid_fill_ctxt(struct ice_vsi_ctx *ctxt)
 445 {
 446         ctxt->info.vlan_flags = ICE_AQ_VSI_VLAN_EMOD_NOTHING;
 447         ctxt->info.vlan_flags |= ICE_AQ_VSI_VLAN_MODE_ALL;
 448         ctxt->info.sw_flags2 &= ~ICE_AQ_VSI_SW_FLAG_RX_VLAN_PRUNE_ENA;
 449         ctxt->info.valid_sections = cpu_to_le16(ICE_AQ_VSI_PROP_VLAN_VALID |
 450                                                 ICE_AQ_VSI_PROP_SW_VALID);
 451 }
 452 
 453 /**
 454  * ice_vsi_manage_pvid - Enable or disable port VLAN for VSI
 455  * @vsi: the VSI to update
 456  * @vid: the VLAN ID to set as a PVID
 457  * @enable: true for enable PVID false for disable
 458  */
 459 static int ice_vsi_manage_pvid(struct ice_vsi *vsi, u16 vid, bool enable)
 460 {
 461         struct device *dev = &vsi->back->pdev->dev;
 462         struct ice_hw *hw = &vsi->back->hw;
 463         struct ice_vsi_ctx *ctxt;
 464         enum ice_status status;
 465         int ret = 0;
 466 
 467         ctxt = devm_kzalloc(dev, sizeof(*ctxt), GFP_KERNEL);
 468         if (!ctxt)
 469                 return -ENOMEM;
 470 
 471         ctxt->info = vsi->info;
 472         if (enable)
 473                 ice_vsi_set_pvid_fill_ctxt(ctxt, vid);
 474         else
 475                 ice_vsi_kill_pvid_fill_ctxt(ctxt);
 476 
 477         status = ice_update_vsi(hw, vsi->idx, ctxt, NULL);
 478         if (status) {
 479                 dev_info(dev, "update VSI for port VLAN failed, err %d aq_err %d\n",
 480                          status, hw->adminq.sq_last_status);
 481                 ret = -EIO;
 482                 goto out;
 483         }
 484 
 485         vsi->info = ctxt->info;
 486 out:
 487         devm_kfree(dev, ctxt);
 488         return ret;
 489 }
 490 
 491 /**
 492  * ice_vf_vsi_setup - Set up a VF VSI
 493  * @pf: board private structure
 494  * @pi: pointer to the port_info instance
 495  * @vf_id: defines VF ID to which this VSI connects.
 496  *
 497  * Returns pointer to the successfully allocated VSI struct on success,
 498  * otherwise returns NULL on failure.
 499  */
 500 static struct ice_vsi *
 501 ice_vf_vsi_setup(struct ice_pf *pf, struct ice_port_info *pi, u16 vf_id)
 502 {
 503         return ice_vsi_setup(pf, pi, ICE_VSI_VF, vf_id);
 504 }
 505 
 506 /**
 507  * ice_calc_vf_first_vector_idx - Calculate MSIX vector index in the PF space
 508  * @pf: pointer to PF structure
 509  * @vf: pointer to VF that the first MSIX vector index is being calculated for
 510  *
 511  * This returns the first MSIX vector index in PF space that is used by this VF.
 512  * This index is used when accessing PF relative registers such as
 513  * GLINT_VECT2FUNC and GLINT_DYN_CTL.
 514  * This will always be the OICR index in the AVF driver so any functionality
 515  * using vf->first_vector_idx for queue configuration will have to increment by
 516  * 1 to avoid meddling with the OICR index.
 517  */
 518 static int ice_calc_vf_first_vector_idx(struct ice_pf *pf, struct ice_vf *vf)
 519 {
 520         return pf->sriov_base_vector + vf->vf_id * pf->num_vf_msix;
 521 }
 522 
 523 /**
 524  * ice_alloc_vsi_res - Setup VF VSI and its resources
 525  * @vf: pointer to the VF structure
 526  *
 527  * Returns 0 on success, negative value on failure
 528  */
 529 static int ice_alloc_vsi_res(struct ice_vf *vf)
 530 {
 531         struct ice_pf *pf = vf->pf;
 532         LIST_HEAD(tmp_add_list);
 533         u8 broadcast[ETH_ALEN];
 534         struct ice_vsi *vsi;
 535         int status = 0;
 536 
 537         /* first vector index is the VFs OICR index */
 538         vf->first_vector_idx = ice_calc_vf_first_vector_idx(pf, vf);
 539 
 540         vsi = ice_vf_vsi_setup(pf, pf->hw.port_info, vf->vf_id);
 541         if (!vsi) {
 542                 dev_err(&pf->pdev->dev, "Failed to create VF VSI\n");
 543                 return -ENOMEM;
 544         }
 545 
 546         vf->lan_vsi_idx = vsi->idx;
 547         vf->lan_vsi_num = vsi->vsi_num;
 548 
 549         /* Check if port VLAN exist before, and restore it accordingly */
 550         if (vf->port_vlan_id) {
 551                 ice_vsi_manage_pvid(vsi, vf->port_vlan_id, true);
 552                 ice_vsi_add_vlan(vsi, vf->port_vlan_id & ICE_VLAN_M);
 553         }
 554 
 555         eth_broadcast_addr(broadcast);
 556 
 557         status = ice_add_mac_to_list(vsi, &tmp_add_list, broadcast);
 558         if (status)
 559                 goto ice_alloc_vsi_res_exit;
 560 
 561         if (is_valid_ether_addr(vf->dflt_lan_addr.addr)) {
 562                 status = ice_add_mac_to_list(vsi, &tmp_add_list,
 563                                              vf->dflt_lan_addr.addr);
 564                 if (status)
 565                         goto ice_alloc_vsi_res_exit;
 566         }
 567 
 568         status = ice_add_mac(&pf->hw, &tmp_add_list);
 569         if (status)
 570                 dev_err(&pf->pdev->dev,
 571                         "could not add mac filters error %d\n", status);
 572         else
 573                 vf->num_mac = 1;
 574 
 575         /* Clear this bit after VF initialization since we shouldn't reclaim
 576          * and reassign interrupts for synchronous or asynchronous VFR events.
 577          * We don't want to reconfigure interrupts since AVF driver doesn't
 578          * expect vector assignment to be changed unless there is a request for
 579          * more vectors.
 580          */
 581 ice_alloc_vsi_res_exit:
 582         ice_free_fltr_list(&pf->pdev->dev, &tmp_add_list);
 583         return status;
 584 }
 585 
 586 /**
 587  * ice_alloc_vf_res - Allocate VF resources
 588  * @vf: pointer to the VF structure
 589  */
 590 static int ice_alloc_vf_res(struct ice_vf *vf)
 591 {
 592         struct ice_pf *pf = vf->pf;
 593         int tx_rx_queue_left;
 594         int status;
 595 
 596         /* Update number of VF queues, in case VF had requested for queue
 597          * changes
 598          */
 599         tx_rx_queue_left = min_t(int, ice_get_avail_txq_count(pf),
 600                                  ice_get_avail_rxq_count(pf));
 601         tx_rx_queue_left += ICE_DFLT_QS_PER_VF;
 602         if (vf->num_req_qs && vf->num_req_qs <= tx_rx_queue_left &&
 603             vf->num_req_qs != vf->num_vf_qs)
 604                 vf->num_vf_qs = vf->num_req_qs;
 605 
 606         /* setup VF VSI and necessary resources */
 607         status = ice_alloc_vsi_res(vf);
 608         if (status)
 609                 goto ice_alloc_vf_res_exit;
 610 
 611         if (vf->trusted)
 612                 set_bit(ICE_VIRTCHNL_VF_CAP_PRIVILEGE, &vf->vf_caps);
 613         else
 614                 clear_bit(ICE_VIRTCHNL_VF_CAP_PRIVILEGE, &vf->vf_caps);
 615 
 616         /* VF is now completely initialized */
 617         set_bit(ICE_VF_STATE_INIT, vf->vf_states);
 618 
 619         return status;
 620 
 621 ice_alloc_vf_res_exit:
 622         ice_free_vf_res(vf);
 623         return status;
 624 }
 625 
 626 /**
 627  * ice_ena_vf_mappings
 628  * @vf: pointer to the VF structure
 629  *
 630  * Enable VF vectors and queues allocation by writing the details into
 631  * respective registers.
 632  */
 633 static void ice_ena_vf_mappings(struct ice_vf *vf)
 634 {
 635         int abs_vf_id, abs_first, abs_last;
 636         struct ice_pf *pf = vf->pf;
 637         struct ice_vsi *vsi;
 638         int first, last, v;
 639         struct ice_hw *hw;
 640         u32 reg;
 641 
 642         hw = &pf->hw;
 643         vsi = pf->vsi[vf->lan_vsi_idx];
 644         first = vf->first_vector_idx;
 645         last = (first + pf->num_vf_msix) - 1;
 646         abs_first = first + pf->hw.func_caps.common_cap.msix_vector_first_id;
 647         abs_last = (abs_first + pf->num_vf_msix) - 1;
 648         abs_vf_id = vf->vf_id + hw->func_caps.vf_base_id;
 649 
 650         /* VF Vector allocation */
 651         reg = (((abs_first << VPINT_ALLOC_FIRST_S) & VPINT_ALLOC_FIRST_M) |
 652                ((abs_last << VPINT_ALLOC_LAST_S) & VPINT_ALLOC_LAST_M) |
 653                VPINT_ALLOC_VALID_M);
 654         wr32(hw, VPINT_ALLOC(vf->vf_id), reg);
 655 
 656         reg = (((abs_first << VPINT_ALLOC_PCI_FIRST_S)
 657                  & VPINT_ALLOC_PCI_FIRST_M) |
 658                ((abs_last << VPINT_ALLOC_PCI_LAST_S) & VPINT_ALLOC_PCI_LAST_M) |
 659                VPINT_ALLOC_PCI_VALID_M);
 660         wr32(hw, VPINT_ALLOC_PCI(vf->vf_id), reg);
 661         /* map the interrupts to its functions */
 662         for (v = first; v <= last; v++) {
 663                 reg = (((abs_vf_id << GLINT_VECT2FUNC_VF_NUM_S) &
 664                         GLINT_VECT2FUNC_VF_NUM_M) |
 665                        ((hw->pf_id << GLINT_VECT2FUNC_PF_NUM_S) &
 666                         GLINT_VECT2FUNC_PF_NUM_M));
 667                 wr32(hw, GLINT_VECT2FUNC(v), reg);
 668         }
 669 
 670         /* Map mailbox interrupt. We put an explicit 0 here to remind us that
 671          * VF admin queue interrupts will go to VF MSI-X vector 0.
 672          */
 673         wr32(hw, VPINT_MBX_CTL(abs_vf_id), VPINT_MBX_CTL_CAUSE_ENA_M | 0);
 674         /* set regardless of mapping mode */
 675         wr32(hw, VPLAN_TXQ_MAPENA(vf->vf_id), VPLAN_TXQ_MAPENA_TX_ENA_M);
 676 
 677         /* VF Tx queues allocation */
 678         if (vsi->tx_mapping_mode == ICE_VSI_MAP_CONTIG) {
 679                 /* set the VF PF Tx queue range
 680                  * VFNUMQ value should be set to (number of queues - 1). A value
 681                  * of 0 means 1 queue and a value of 255 means 256 queues
 682                  */
 683                 reg = (((vsi->txq_map[0] << VPLAN_TX_QBASE_VFFIRSTQ_S) &
 684                         VPLAN_TX_QBASE_VFFIRSTQ_M) |
 685                        (((vsi->alloc_txq - 1) << VPLAN_TX_QBASE_VFNUMQ_S) &
 686                         VPLAN_TX_QBASE_VFNUMQ_M));
 687                 wr32(hw, VPLAN_TX_QBASE(vf->vf_id), reg);
 688         } else {
 689                 dev_err(&pf->pdev->dev,
 690                         "Scattered mode for VF Tx queues is not yet implemented\n");
 691         }
 692 
 693         /* set regardless of mapping mode */
 694         wr32(hw, VPLAN_RXQ_MAPENA(vf->vf_id), VPLAN_RXQ_MAPENA_RX_ENA_M);
 695 
 696         /* VF Rx queues allocation */
 697         if (vsi->rx_mapping_mode == ICE_VSI_MAP_CONTIG) {
 698                 /* set the VF PF Rx queue range
 699                  * VFNUMQ value should be set to (number of queues - 1). A value
 700                  * of 0 means 1 queue and a value of 255 means 256 queues
 701                  */
 702                 reg = (((vsi->rxq_map[0] << VPLAN_RX_QBASE_VFFIRSTQ_S) &
 703                         VPLAN_RX_QBASE_VFFIRSTQ_M) |
 704                        (((vsi->alloc_txq - 1) << VPLAN_RX_QBASE_VFNUMQ_S) &
 705                         VPLAN_RX_QBASE_VFNUMQ_M));
 706                 wr32(hw, VPLAN_RX_QBASE(vf->vf_id), reg);
 707         } else {
 708                 dev_err(&pf->pdev->dev,
 709                         "Scattered mode for VF Rx queues is not yet implemented\n");
 710         }
 711 }
 712 
 713 /**
 714  * ice_determine_res
 715  * @pf: pointer to the PF structure
 716  * @avail_res: available resources in the PF structure
 717  * @max_res: maximum resources that can be given per VF
 718  * @min_res: minimum resources that can be given per VF
 719  *
 720  * Returns non-zero value if resources (queues/vectors) are available or
 721  * returns zero if PF cannot accommodate for all num_alloc_vfs.
 722  */
 723 static int
 724 ice_determine_res(struct ice_pf *pf, u16 avail_res, u16 max_res, u16 min_res)
 725 {
 726         bool checked_min_res = false;
 727         int res;
 728 
 729         /* start by checking if PF can assign max number of resources for
 730          * all num_alloc_vfs.
 731          * if yes, return number per VF
 732          * If no, divide by 2 and roundup, check again
 733          * repeat the loop till we reach a point where even minimum resources
 734          * are not available, in that case return 0
 735          */
 736         res = max_res;
 737         while ((res >= min_res) && !checked_min_res) {
 738                 int num_all_res;
 739 
 740                 num_all_res = pf->num_alloc_vfs * res;
 741                 if (num_all_res <= avail_res)
 742                         return res;
 743 
 744                 if (res == min_res)
 745                         checked_min_res = true;
 746 
 747                 res = DIV_ROUND_UP(res, 2);
 748         }
 749         return 0;
 750 }
 751 
 752 /**
 753  * ice_calc_vf_reg_idx - Calculate the VF's register index in the PF space
 754  * @vf: VF to calculate the register index for
 755  * @q_vector: a q_vector associated to the VF
 756  */
 757 int ice_calc_vf_reg_idx(struct ice_vf *vf, struct ice_q_vector *q_vector)
 758 {
 759         struct ice_pf *pf;
 760 
 761         if (!vf || !q_vector)
 762                 return -EINVAL;
 763 
 764         pf = vf->pf;
 765 
 766         /* always add one to account for the OICR being the first MSIX */
 767         return pf->sriov_base_vector + pf->num_vf_msix * vf->vf_id +
 768                 q_vector->v_idx + 1;
 769 }
 770 
 771 /**
 772  * ice_get_max_valid_res_idx - Get the max valid resource index
 773  * @res: pointer to the resource to find the max valid index for
 774  *
 775  * Start from the end of the ice_res_tracker and return right when we find the
 776  * first res->list entry with the ICE_RES_VALID_BIT set. This function is only
 777  * valid for SR-IOV because it is the only consumer that manipulates the
 778  * res->end and this is always called when res->end is set to res->num_entries.
 779  */
 780 static int ice_get_max_valid_res_idx(struct ice_res_tracker *res)
 781 {
 782         int i;
 783 
 784         if (!res)
 785                 return -EINVAL;
 786 
 787         for (i = res->num_entries - 1; i >= 0; i--)
 788                 if (res->list[i] & ICE_RES_VALID_BIT)
 789                         return i;
 790 
 791         return 0;
 792 }
 793 
 794 /**
 795  * ice_sriov_set_msix_res - Set any used MSIX resources
 796  * @pf: pointer to PF structure
 797  * @num_msix_needed: number of MSIX vectors needed for all SR-IOV VFs
 798  *
 799  * This function allows SR-IOV resources to be taken from the end of the PF's
 800  * allowed HW MSIX vectors so in many cases the irq_tracker will not
 801  * be needed. In these cases we just set the pf->sriov_base_vector and return
 802  * success.
 803  *
 804  * If SR-IOV needs to use any pf->irq_tracker entries it updates the
 805  * irq_tracker->end based on the first entry needed for SR-IOV. This makes it
 806  * so any calls to ice_get_res() using the irq_tracker will not try to use
 807  * resources at or beyond the newly set value.
 808  *
 809  * Return 0 on success, and -EINVAL when there are not enough MSIX vectors in
 810  * in the PF's space available for SR-IOV.
 811  */
 812 static int ice_sriov_set_msix_res(struct ice_pf *pf, u16 num_msix_needed)
 813 {
 814         int max_valid_res_idx = ice_get_max_valid_res_idx(pf->irq_tracker);
 815         u16 pf_total_msix_vectors =
 816                 pf->hw.func_caps.common_cap.num_msix_vectors;
 817         struct ice_res_tracker *res = pf->irq_tracker;
 818         int sriov_base_vector;
 819 
 820         if (max_valid_res_idx < 0)
 821                 return max_valid_res_idx;
 822 
 823         sriov_base_vector = pf_total_msix_vectors - num_msix_needed;
 824 
 825         /* make sure we only grab irq_tracker entries from the list end and
 826          * that we have enough available MSIX vectors
 827          */
 828         if (sriov_base_vector <= max_valid_res_idx)
 829                 return -EINVAL;
 830 
 831         pf->sriov_base_vector = sriov_base_vector;
 832 
 833         /* dip into irq_tracker entries and update used resources */
 834         if (num_msix_needed > (pf_total_msix_vectors - res->num_entries)) {
 835                 pf->num_avail_sw_msix -=
 836                         res->num_entries - pf->sriov_base_vector;
 837                 res->end = pf->sriov_base_vector;
 838         }
 839 
 840         return 0;
 841 }
 842 
 843 /**
 844  * ice_check_avail_res - check if vectors and queues are available
 845  * @pf: pointer to the PF structure
 846  *
 847  * This function is where we calculate actual number of resources for VF VSIs,
 848  * we don't reserve ahead of time during probe. Returns success if vectors and
 849  * queues resources are available, otherwise returns error code
 850  */
 851 static int ice_check_avail_res(struct ice_pf *pf)
 852 {
 853         int max_valid_res_idx = ice_get_max_valid_res_idx(pf->irq_tracker);
 854         u16 num_msix, num_txq, num_rxq, num_avail_msix;
 855 
 856         if (!pf->num_alloc_vfs || max_valid_res_idx < 0)
 857                 return -EINVAL;
 858 
 859         /* add 1 to max_valid_res_idx to account for it being 0-based */
 860         num_avail_msix = pf->hw.func_caps.common_cap.num_msix_vectors -
 861                 (max_valid_res_idx + 1);
 862 
 863         /* Grab from HW interrupts common pool
 864          * Note: By the time the user decides it needs more vectors in a VF
 865          * its already too late since one must decide this prior to creating the
 866          * VF interface. So the best we can do is take a guess as to what the
 867          * user might want.
 868          *
 869          * We have two policies for vector allocation:
 870          * 1. if num_alloc_vfs is from 1 to 16, then we consider this as small
 871          * number of NFV VFs used for NFV appliances, since this is a special
 872          * case, we try to assign maximum vectors per VF (65) as much as
 873          * possible, based on determine_resources algorithm.
 874          * 2. if num_alloc_vfs is from 17 to 256, then its large number of
 875          * regular VFs which are not used for any special purpose. Hence try to
 876          * grab default interrupt vectors (5 as supported by AVF driver).
 877          */
 878         if (pf->num_alloc_vfs <= 16) {
 879                 num_msix = ice_determine_res(pf, num_avail_msix,
 880                                              ICE_MAX_INTR_PER_VF,
 881                                              ICE_MIN_INTR_PER_VF);
 882         } else if (pf->num_alloc_vfs <= ICE_MAX_VF_COUNT) {
 883                 num_msix = ice_determine_res(pf, num_avail_msix,
 884                                              ICE_DFLT_INTR_PER_VF,
 885                                              ICE_MIN_INTR_PER_VF);
 886         } else {
 887                 dev_err(&pf->pdev->dev,
 888                         "Number of VFs %d exceeds max VF count %d\n",
 889                         pf->num_alloc_vfs, ICE_MAX_VF_COUNT);
 890                 return -EIO;
 891         }
 892 
 893         if (!num_msix)
 894                 return -EIO;
 895 
 896         /* Grab from the common pool
 897          * start by requesting Default queues (4 as supported by AVF driver),
 898          * Note that, the main difference between queues and vectors is, latter
 899          * can only be reserved at init time but queues can be requested by VF
 900          * at runtime through Virtchnl, that is the reason we start by reserving
 901          * few queues.
 902          */
 903         num_txq = ice_determine_res(pf, ice_get_avail_txq_count(pf),
 904                                     ICE_DFLT_QS_PER_VF, ICE_MIN_QS_PER_VF);
 905 
 906         num_rxq = ice_determine_res(pf, ice_get_avail_rxq_count(pf),
 907                                     ICE_DFLT_QS_PER_VF, ICE_MIN_QS_PER_VF);
 908 
 909         if (!num_txq || !num_rxq)
 910                 return -EIO;
 911 
 912         if (ice_sriov_set_msix_res(pf, num_msix * pf->num_alloc_vfs))
 913                 return -EINVAL;
 914 
 915         /* since AVF driver works with only queue pairs which means, it expects
 916          * to have equal number of Rx and Tx queues, so take the minimum of
 917          * available Tx or Rx queues
 918          */
 919         pf->num_vf_qps = min_t(int, num_txq, num_rxq);
 920         pf->num_vf_msix = num_msix;
 921 
 922         return 0;
 923 }
 924 
 925 /**
 926  * ice_cleanup_and_realloc_vf - Clean up VF and reallocate resources after reset
 927  * @vf: pointer to the VF structure
 928  *
 929  * Cleanup a VF after the hardware reset is finished. Expects the caller to
 930  * have verified whether the reset is finished properly, and ensure the
 931  * minimum amount of wait time has passed. Reallocate VF resources back to make
 932  * VF state active
 933  */
 934 static void ice_cleanup_and_realloc_vf(struct ice_vf *vf)
 935 {
 936         struct ice_pf *pf = vf->pf;
 937         struct ice_hw *hw;
 938         u32 reg;
 939 
 940         hw = &pf->hw;
 941 
 942         /* PF software completes the flow by notifying VF that reset flow is
 943          * completed. This is done by enabling hardware by clearing the reset
 944          * bit in the VPGEN_VFRTRIG reg and setting VFR_STATE in the VFGEN_RSTAT
 945          * register to VFR completed (done at the end of this function)
 946          * By doing this we allow HW to access VF memory at any point. If we
 947          * did it any sooner, HW could access memory while it was being freed
 948          * in ice_free_vf_res(), causing an IOMMU fault.
 949          *
 950          * On the other hand, this needs to be done ASAP, because the VF driver
 951          * is waiting for this to happen and may report a timeout. It's
 952          * harmless, but it gets logged into Guest OS kernel log, so best avoid
 953          * it.
 954          */
 955         reg = rd32(hw, VPGEN_VFRTRIG(vf->vf_id));
 956         reg &= ~VPGEN_VFRTRIG_VFSWR_M;
 957         wr32(hw, VPGEN_VFRTRIG(vf->vf_id), reg);
 958 
 959         /* reallocate VF resources to finish resetting the VSI state */
 960         if (!ice_alloc_vf_res(vf)) {
 961                 ice_ena_vf_mappings(vf);
 962                 set_bit(ICE_VF_STATE_ACTIVE, vf->vf_states);
 963                 clear_bit(ICE_VF_STATE_DIS, vf->vf_states);
 964                 vf->num_vlan = 0;
 965         }
 966 
 967         /* Tell the VF driver the reset is done. This needs to be done only
 968          * after VF has been fully initialized, because the VF driver may
 969          * request resources immediately after setting this flag.
 970          */
 971         wr32(hw, VFGEN_RSTAT(vf->vf_id), VIRTCHNL_VFR_VFACTIVE);
 972 }
 973 
 974 /**
 975  * ice_vf_set_vsi_promisc - set given VF VSI to given promiscuous mode(s)
 976  * @vf: pointer to the VF info
 977  * @vsi: the VSI being configured
 978  * @promisc_m: mask of promiscuous config bits
 979  * @rm_promisc: promisc flag request from the VF to remove or add filter
 980  *
 981  * This function configures VF VSI promiscuous mode, based on the VF requests,
 982  * for Unicast, Multicast and VLAN
 983  */
 984 static enum ice_status
 985 ice_vf_set_vsi_promisc(struct ice_vf *vf, struct ice_vsi *vsi, u8 promisc_m,
 986                        bool rm_promisc)
 987 {
 988         struct ice_pf *pf = vf->pf;
 989         enum ice_status status = 0;
 990         struct ice_hw *hw;
 991 
 992         hw = &pf->hw;
 993         if (vf->num_vlan) {
 994                 status = ice_set_vlan_vsi_promisc(hw, vsi->idx, promisc_m,
 995                                                   rm_promisc);
 996         } else if (vf->port_vlan_id) {
 997                 if (rm_promisc)
 998                         status = ice_clear_vsi_promisc(hw, vsi->idx, promisc_m,
 999                                                        vf->port_vlan_id);
1000                 else
1001                         status = ice_set_vsi_promisc(hw, vsi->idx, promisc_m,
1002                                                      vf->port_vlan_id);
1003         } else {
1004                 if (rm_promisc)
1005                         status = ice_clear_vsi_promisc(hw, vsi->idx, promisc_m,
1006                                                        0);
1007                 else
1008                         status = ice_set_vsi_promisc(hw, vsi->idx, promisc_m,
1009                                                      0);
1010         }
1011 
1012         return status;
1013 }
1014 
1015 /**
1016  * ice_config_res_vfs - Finalize allocation of VFs resources in one go
1017  * @pf: pointer to the PF structure
1018  *
1019  * This function is being called as last part of resetting all VFs, or when
1020  * configuring VFs for the first time, where there is no resource to be freed
1021  * Returns true if resources were properly allocated for all VFs, and false
1022  * otherwise.
1023  */
1024 static bool ice_config_res_vfs(struct ice_pf *pf)
1025 {
1026         struct ice_hw *hw = &pf->hw;
1027         int v;
1028 
1029         if (ice_check_avail_res(pf)) {
1030                 dev_err(&pf->pdev->dev,
1031                         "Cannot allocate VF resources, try with fewer number of VFs\n");
1032                 return false;
1033         }
1034 
1035         /* rearm global interrupts */
1036         if (test_and_clear_bit(__ICE_OICR_INTR_DIS, pf->state))
1037                 ice_irq_dynamic_ena(hw, NULL, NULL);
1038 
1039         /* Finish resetting each VF and allocate resources */
1040         for (v = 0; v < pf->num_alloc_vfs; v++) {
1041                 struct ice_vf *vf = &pf->vf[v];
1042 
1043                 vf->num_vf_qs = pf->num_vf_qps;
1044                 dev_dbg(&pf->pdev->dev,
1045                         "VF-id %d has %d queues configured\n",
1046                         vf->vf_id, vf->num_vf_qs);
1047                 ice_cleanup_and_realloc_vf(vf);
1048         }
1049 
1050         ice_flush(hw);
1051         clear_bit(__ICE_VF_DIS, pf->state);
1052 
1053         return true;
1054 }
1055 
1056 /**
1057  * ice_reset_all_vfs - reset all allocated VFs in one go
1058  * @pf: pointer to the PF structure
1059  * @is_vflr: true if VFLR was issued, false if not
1060  *
1061  * First, tell the hardware to reset each VF, then do all the waiting in one
1062  * chunk, and finally finish restoring each VF after the wait. This is useful
1063  * during PF routines which need to reset all VFs, as otherwise it must perform
1064  * these resets in a serialized fashion.
1065  *
1066  * Returns true if any VFs were reset, and false otherwise.
1067  */
1068 bool ice_reset_all_vfs(struct ice_pf *pf, bool is_vflr)
1069 {
1070         struct ice_hw *hw = &pf->hw;
1071         struct ice_vf *vf;
1072         int v, i;
1073 
1074         /* If we don't have any VFs, then there is nothing to reset */
1075         if (!pf->num_alloc_vfs)
1076                 return false;
1077 
1078         /* If VFs have been disabled, there is no need to reset */
1079         if (test_and_set_bit(__ICE_VF_DIS, pf->state))
1080                 return false;
1081 
1082         /* Begin reset on all VFs at once */
1083         for (v = 0; v < pf->num_alloc_vfs; v++)
1084                 ice_trigger_vf_reset(&pf->vf[v], is_vflr, true);
1085 
1086         for (v = 0; v < pf->num_alloc_vfs; v++) {
1087                 struct ice_vsi *vsi;
1088 
1089                 vf = &pf->vf[v];
1090                 vsi = pf->vsi[vf->lan_vsi_idx];
1091                 if (test_bit(ICE_VF_STATE_QS_ENA, vf->vf_states))
1092                         ice_dis_vf_qs(vf);
1093                 ice_dis_vsi_txq(vsi->port_info, vsi->idx, 0, 0, NULL, NULL,
1094                                 NULL, ICE_VF_RESET, vf->vf_id, NULL);
1095         }
1096 
1097         /* HW requires some time to make sure it can flush the FIFO for a VF
1098          * when it resets it. Poll the VPGEN_VFRSTAT register for each VF in
1099          * sequence to make sure that it has completed. We'll keep track of
1100          * the VFs using a simple iterator that increments once that VF has
1101          * finished resetting.
1102          */
1103         for (i = 0, v = 0; i < 10 && v < pf->num_alloc_vfs; i++) {
1104 
1105                 /* Check each VF in sequence */
1106                 while (v < pf->num_alloc_vfs) {
1107                         u32 reg;
1108 
1109                         vf = &pf->vf[v];
1110                         reg = rd32(hw, VPGEN_VFRSTAT(vf->vf_id));
1111                         if (!(reg & VPGEN_VFRSTAT_VFRD_M)) {
1112                                 /* only delay if the check failed */
1113                                 usleep_range(10, 20);
1114                                 break;
1115                         }
1116 
1117                         /* If the current VF has finished resetting, move on
1118                          * to the next VF in sequence.
1119                          */
1120                         v++;
1121                 }
1122         }
1123 
1124         /* Display a warning if at least one VF didn't manage to reset in
1125          * time, but continue on with the operation.
1126          */
1127         if (v < pf->num_alloc_vfs)
1128                 dev_warn(&pf->pdev->dev, "VF reset check timeout\n");
1129 
1130         /* free VF resources to begin resetting the VSI state */
1131         for (v = 0; v < pf->num_alloc_vfs; v++) {
1132                 vf = &pf->vf[v];
1133 
1134                 ice_free_vf_res(vf);
1135 
1136                 /* Free VF queues as well, and reallocate later.
1137                  * If a given VF has different number of queues
1138                  * configured, the request for update will come
1139                  * via mailbox communication.
1140                  */
1141                 vf->num_vf_qs = 0;
1142         }
1143 
1144         if (ice_sriov_free_msix_res(pf))
1145                 dev_err(&pf->pdev->dev,
1146                         "Failed to free MSIX resources used by SR-IOV\n");
1147 
1148         if (!ice_config_res_vfs(pf))
1149                 return false;
1150 
1151         return true;
1152 }
1153 
1154 /**
1155  * ice_reset_vf - Reset a particular VF
1156  * @vf: pointer to the VF structure
1157  * @is_vflr: true if VFLR was issued, false if not
1158  *
1159  * Returns true if the VF is reset, false otherwise.
1160  */
1161 static bool ice_reset_vf(struct ice_vf *vf, bool is_vflr)
1162 {
1163         struct ice_pf *pf = vf->pf;
1164         struct ice_vsi *vsi;
1165         struct ice_hw *hw;
1166         bool rsd = false;
1167         u8 promisc_m;
1168         u32 reg;
1169         int i;
1170 
1171         /* If the PF has been disabled, there is no need resetting VF until
1172          * PF is active again.
1173          */
1174         if (test_bit(__ICE_VF_DIS, pf->state))
1175                 return false;
1176 
1177         /* If the VF has been disabled, this means something else is
1178          * resetting the VF, so we shouldn't continue. Otherwise, set
1179          * disable VF state bit for actual reset, and continue.
1180          */
1181         if (test_and_set_bit(ICE_VF_STATE_DIS, vf->vf_states))
1182                 return false;
1183 
1184         ice_trigger_vf_reset(vf, is_vflr, false);
1185 
1186         vsi = pf->vsi[vf->lan_vsi_idx];
1187 
1188         if (test_bit(ICE_VF_STATE_QS_ENA, vf->vf_states))
1189                 ice_dis_vf_qs(vf);
1190 
1191         /* Call Disable LAN Tx queue AQ whether or not queues are
1192          * enabled. This is needed for successful completion of VFR.
1193          */
1194         ice_dis_vsi_txq(vsi->port_info, vsi->idx, 0, 0, NULL, NULL,
1195                         NULL, ICE_VF_RESET, vf->vf_id, NULL);
1196 
1197         hw = &pf->hw;
1198         /* poll VPGEN_VFRSTAT reg to make sure
1199          * that reset is complete
1200          */
1201         for (i = 0; i < 10; i++) {
1202                 /* VF reset requires driver to first reset the VF and then
1203                  * poll the status register to make sure that the reset
1204                  * completed successfully.
1205                  */
1206                 reg = rd32(hw, VPGEN_VFRSTAT(vf->vf_id));
1207                 if (reg & VPGEN_VFRSTAT_VFRD_M) {
1208                         rsd = true;
1209                         break;
1210                 }
1211 
1212                 /* only sleep if the reset is not done */
1213                 usleep_range(10, 20);
1214         }
1215 
1216         /* Display a warning if VF didn't manage to reset in time, but need to
1217          * continue on with the operation.
1218          */
1219         if (!rsd)
1220                 dev_warn(&pf->pdev->dev, "VF reset check timeout on VF %d\n",
1221                          vf->vf_id);
1222 
1223         /* disable promiscuous modes in case they were enabled
1224          * ignore any error if disabling process failed
1225          */
1226         if (test_bit(ICE_VF_STATE_UC_PROMISC, vf->vf_states) ||
1227             test_bit(ICE_VF_STATE_MC_PROMISC, vf->vf_states)) {
1228                 if (vf->port_vlan_id ||  vf->num_vlan)
1229                         promisc_m = ICE_UCAST_VLAN_PROMISC_BITS;
1230                 else
1231                         promisc_m = ICE_UCAST_PROMISC_BITS;
1232 
1233                 vsi = pf->vsi[vf->lan_vsi_idx];
1234                 if (ice_vf_set_vsi_promisc(vf, vsi, promisc_m, true))
1235                         dev_err(&pf->pdev->dev, "disabling promiscuous mode failed\n");
1236         }
1237 
1238         /* free VF resources to begin resetting the VSI state */
1239         ice_free_vf_res(vf);
1240 
1241         ice_cleanup_and_realloc_vf(vf);
1242 
1243         ice_flush(hw);
1244 
1245         return true;
1246 }
1247 
1248 /**
1249  * ice_vc_notify_link_state - Inform all VFs on a PF of link status
1250  * @pf: pointer to the PF structure
1251  */
1252 void ice_vc_notify_link_state(struct ice_pf *pf)
1253 {
1254         int i;
1255 
1256         for (i = 0; i < pf->num_alloc_vfs; i++)
1257                 ice_vc_notify_vf_link_state(&pf->vf[i]);
1258 }
1259 
1260 /**
1261  * ice_vc_notify_reset - Send pending reset message to all VFs
1262  * @pf: pointer to the PF structure
1263  *
1264  * indicate a pending reset to all VFs on a given PF
1265  */
1266 void ice_vc_notify_reset(struct ice_pf *pf)
1267 {
1268         struct virtchnl_pf_event pfe;
1269 
1270         if (!pf->num_alloc_vfs)
1271                 return;
1272 
1273         pfe.event = VIRTCHNL_EVENT_RESET_IMPENDING;
1274         pfe.severity = PF_EVENT_SEVERITY_CERTAIN_DOOM;
1275         ice_vc_vf_broadcast(pf, VIRTCHNL_OP_EVENT, VIRTCHNL_STATUS_SUCCESS,
1276                             (u8 *)&pfe, sizeof(struct virtchnl_pf_event));
1277 }
1278 
1279 /**
1280  * ice_vc_notify_vf_reset - Notify VF of a reset event
1281  * @vf: pointer to the VF structure
1282  */
1283 static void ice_vc_notify_vf_reset(struct ice_vf *vf)
1284 {
1285         struct virtchnl_pf_event pfe;
1286 
1287         /* validate the request */
1288         if (!vf || vf->vf_id >= vf->pf->num_alloc_vfs)
1289                 return;
1290 
1291         /* Bail out if VF is in disabled state, neither initialized, nor active
1292          * state - otherwise proceed with notifications
1293          */
1294         if ((!test_bit(ICE_VF_STATE_INIT, vf->vf_states) &&
1295              !test_bit(ICE_VF_STATE_ACTIVE, vf->vf_states)) ||
1296             test_bit(ICE_VF_STATE_DIS, vf->vf_states))
1297                 return;
1298 
1299         pfe.event = VIRTCHNL_EVENT_RESET_IMPENDING;
1300         pfe.severity = PF_EVENT_SEVERITY_CERTAIN_DOOM;
1301         ice_aq_send_msg_to_vf(&vf->pf->hw, vf->vf_id, VIRTCHNL_OP_EVENT,
1302                               VIRTCHNL_STATUS_SUCCESS, (u8 *)&pfe, sizeof(pfe),
1303                               NULL);
1304 }
1305 
1306 /**
1307  * ice_alloc_vfs - Allocate and set up VFs resources
1308  * @pf: pointer to the PF structure
1309  * @num_alloc_vfs: number of VFs to allocate
1310  */
1311 static int ice_alloc_vfs(struct ice_pf *pf, u16 num_alloc_vfs)
1312 {
1313         struct ice_hw *hw = &pf->hw;
1314         struct ice_vf *vfs;
1315         int i, ret;
1316 
1317         /* Disable global interrupt 0 so we don't try to handle the VFLR. */
1318         wr32(hw, GLINT_DYN_CTL(pf->oicr_idx),
1319              ICE_ITR_NONE << GLINT_DYN_CTL_ITR_INDX_S);
1320         set_bit(__ICE_OICR_INTR_DIS, pf->state);
1321         ice_flush(hw);
1322 
1323         ret = pci_enable_sriov(pf->pdev, num_alloc_vfs);
1324         if (ret) {
1325                 pf->num_alloc_vfs = 0;
1326                 goto err_unroll_intr;
1327         }
1328         /* allocate memory */
1329         vfs = devm_kcalloc(&pf->pdev->dev, num_alloc_vfs, sizeof(*vfs),
1330                            GFP_KERNEL);
1331         if (!vfs) {
1332                 ret = -ENOMEM;
1333                 goto err_pci_disable_sriov;
1334         }
1335         pf->vf = vfs;
1336 
1337         /* apply default profile */
1338         for (i = 0; i < num_alloc_vfs; i++) {
1339                 vfs[i].pf = pf;
1340                 vfs[i].vf_sw_id = pf->first_sw;
1341                 vfs[i].vf_id = i;
1342 
1343                 /* assign default capabilities */
1344                 set_bit(ICE_VIRTCHNL_VF_CAP_L2, &vfs[i].vf_caps);
1345                 vfs[i].spoofchk = true;
1346         }
1347         pf->num_alloc_vfs = num_alloc_vfs;
1348 
1349         /* VF resources get allocated with initialization */
1350         if (!ice_config_res_vfs(pf)) {
1351                 ret = -EIO;
1352                 goto err_unroll_sriov;
1353         }
1354 
1355         return ret;
1356 
1357 err_unroll_sriov:
1358         pf->vf = NULL;
1359         devm_kfree(&pf->pdev->dev, vfs);
1360         vfs = NULL;
1361         pf->num_alloc_vfs = 0;
1362 err_pci_disable_sriov:
1363         pci_disable_sriov(pf->pdev);
1364 err_unroll_intr:
1365         /* rearm interrupts here */
1366         ice_irq_dynamic_ena(hw, NULL, NULL);
1367         clear_bit(__ICE_OICR_INTR_DIS, pf->state);
1368         return ret;
1369 }
1370 
1371 /**
1372  * ice_pf_state_is_nominal - checks the PF for nominal state
1373  * @pf: pointer to PF to check
1374  *
1375  * Check the PF's state for a collection of bits that would indicate
1376  * the PF is in a state that would inhibit normal operation for
1377  * driver functionality.
1378  *
1379  * Returns true if PF is in a nominal state.
1380  * Returns false otherwise
1381  */
1382 static bool ice_pf_state_is_nominal(struct ice_pf *pf)
1383 {
1384         DECLARE_BITMAP(check_bits, __ICE_STATE_NBITS) = { 0 };
1385 
1386         if (!pf)
1387                 return false;
1388 
1389         bitmap_set(check_bits, 0, __ICE_STATE_NOMINAL_CHECK_BITS);
1390         if (bitmap_intersects(pf->state, check_bits, __ICE_STATE_NBITS))
1391                 return false;
1392 
1393         return true;
1394 }
1395 
1396 /**
1397  * ice_pci_sriov_ena - Enable or change number of VFs
1398  * @pf: pointer to the PF structure
1399  * @num_vfs: number of VFs to allocate
1400  */
1401 static int ice_pci_sriov_ena(struct ice_pf *pf, int num_vfs)
1402 {
1403         int pre_existing_vfs = pci_num_vf(pf->pdev);
1404         struct device *dev = &pf->pdev->dev;
1405         int err;
1406 
1407         if (!ice_pf_state_is_nominal(pf)) {
1408                 dev_err(dev, "Cannot enable SR-IOV, device not ready\n");
1409                 return -EBUSY;
1410         }
1411 
1412         if (!test_bit(ICE_FLAG_SRIOV_CAPABLE, pf->flags)) {
1413                 dev_err(dev, "This device is not capable of SR-IOV\n");
1414                 return -ENODEV;
1415         }
1416 
1417         if (pre_existing_vfs && pre_existing_vfs != num_vfs)
1418                 ice_free_vfs(pf);
1419         else if (pre_existing_vfs && pre_existing_vfs == num_vfs)
1420                 return num_vfs;
1421 
1422         if (num_vfs > pf->num_vfs_supported) {
1423                 dev_err(dev, "Can't enable %d VFs, max VFs supported is %d\n",
1424                         num_vfs, pf->num_vfs_supported);
1425                 return -ENOTSUPP;
1426         }
1427 
1428         dev_info(dev, "Allocating %d VFs\n", num_vfs);
1429         err = ice_alloc_vfs(pf, num_vfs);
1430         if (err) {
1431                 dev_err(dev, "Failed to enable SR-IOV: %d\n", err);
1432                 return err;
1433         }
1434 
1435         set_bit(ICE_FLAG_SRIOV_ENA, pf->flags);
1436         return num_vfs;
1437 }
1438 
1439 /**
1440  * ice_sriov_configure - Enable or change number of VFs via sysfs
1441  * @pdev: pointer to a pci_dev structure
1442  * @num_vfs: number of VFs to allocate
1443  *
1444  * This function is called when the user updates the number of VFs in sysfs.
1445  */
1446 int ice_sriov_configure(struct pci_dev *pdev, int num_vfs)
1447 {
1448         struct ice_pf *pf = pci_get_drvdata(pdev);
1449 
1450         if (ice_is_safe_mode(pf)) {
1451                 dev_err(&pf->pdev->dev,
1452                         "SR-IOV cannot be configured - Device is in Safe Mode\n");
1453                 return -EOPNOTSUPP;
1454         }
1455 
1456         if (num_vfs)
1457                 return ice_pci_sriov_ena(pf, num_vfs);
1458 
1459         if (!pci_vfs_assigned(pdev)) {
1460                 ice_free_vfs(pf);
1461         } else {
1462                 dev_err(&pf->pdev->dev,
1463                         "can't free VFs because some are assigned to VMs.\n");
1464                 return -EBUSY;
1465         }
1466 
1467         return 0;
1468 }
1469 
1470 /**
1471  * ice_process_vflr_event - Free VF resources via IRQ calls
1472  * @pf: pointer to the PF structure
1473  *
1474  * called from the VFLR IRQ handler to
1475  * free up VF resources and state variables
1476  */
1477 void ice_process_vflr_event(struct ice_pf *pf)
1478 {
1479         struct ice_hw *hw = &pf->hw;
1480         int vf_id;
1481         u32 reg;
1482 
1483         if (!test_and_clear_bit(__ICE_VFLR_EVENT_PENDING, pf->state) ||
1484             !pf->num_alloc_vfs)
1485                 return;
1486 
1487         for (vf_id = 0; vf_id < pf->num_alloc_vfs; vf_id++) {
1488                 struct ice_vf *vf = &pf->vf[vf_id];
1489                 u32 reg_idx, bit_idx;
1490 
1491                 reg_idx = (hw->func_caps.vf_base_id + vf_id) / 32;
1492                 bit_idx = (hw->func_caps.vf_base_id + vf_id) % 32;
1493                 /* read GLGEN_VFLRSTAT register to find out the flr VFs */
1494                 reg = rd32(hw, GLGEN_VFLRSTAT(reg_idx));
1495                 if (reg & BIT(bit_idx))
1496                         /* GLGEN_VFLRSTAT bit will be cleared in ice_reset_vf */
1497                         ice_reset_vf(vf, true);
1498         }
1499 }
1500 
1501 /**
1502  * ice_vc_dis_vf - Disable a given VF via SW reset
1503  * @vf: pointer to the VF info
1504  *
1505  * Disable the VF through a SW reset
1506  */
1507 static void ice_vc_dis_vf(struct ice_vf *vf)
1508 {
1509         ice_vc_notify_vf_reset(vf);
1510         ice_reset_vf(vf, false);
1511 }
1512 
1513 /**
1514  * ice_vc_send_msg_to_vf - Send message to VF
1515  * @vf: pointer to the VF info
1516  * @v_opcode: virtual channel opcode
1517  * @v_retval: virtual channel return value
1518  * @msg: pointer to the msg buffer
1519  * @msglen: msg length
1520  *
1521  * send msg to VF
1522  */
1523 static int
1524 ice_vc_send_msg_to_vf(struct ice_vf *vf, u32 v_opcode,
1525                       enum virtchnl_status_code v_retval, u8 *msg, u16 msglen)
1526 {
1527         enum ice_status aq_ret;
1528         struct ice_pf *pf;
1529 
1530         /* validate the request */
1531         if (!vf || vf->vf_id >= vf->pf->num_alloc_vfs)
1532                 return -EINVAL;
1533 
1534         pf = vf->pf;
1535 
1536         /* single place to detect unsuccessful return values */
1537         if (v_retval) {
1538                 vf->num_inval_msgs++;
1539                 dev_info(&pf->pdev->dev, "VF %d failed opcode %d, retval: %d\n",
1540                          vf->vf_id, v_opcode, v_retval);
1541                 if (vf->num_inval_msgs > ICE_DFLT_NUM_INVAL_MSGS_ALLOWED) {
1542                         dev_err(&pf->pdev->dev,
1543                                 "Number of invalid messages exceeded for VF %d\n",
1544                                 vf->vf_id);
1545                         dev_err(&pf->pdev->dev, "Use PF Control I/F to enable the VF\n");
1546                         set_bit(ICE_VF_STATE_DIS, vf->vf_states);
1547                         return -EIO;
1548                 }
1549         } else {
1550                 vf->num_valid_msgs++;
1551                 /* reset the invalid counter, if a valid message is received. */
1552                 vf->num_inval_msgs = 0;
1553         }
1554 
1555         aq_ret = ice_aq_send_msg_to_vf(&pf->hw, vf->vf_id, v_opcode, v_retval,
1556                                        msg, msglen, NULL);
1557         if (aq_ret && pf->hw.mailboxq.sq_last_status != ICE_AQ_RC_ENOSYS) {
1558                 dev_info(&pf->pdev->dev,
1559                          "Unable to send the message to VF %d ret %d aq_err %d\n",
1560                          vf->vf_id, aq_ret, pf->hw.mailboxq.sq_last_status);
1561                 return -EIO;
1562         }
1563 
1564         return 0;
1565 }
1566 
1567 /**
1568  * ice_vc_get_ver_msg
1569  * @vf: pointer to the VF info
1570  * @msg: pointer to the msg buffer
1571  *
1572  * called from the VF to request the API version used by the PF
1573  */
1574 static int ice_vc_get_ver_msg(struct ice_vf *vf, u8 *msg)
1575 {
1576         struct virtchnl_version_info info = {
1577                 VIRTCHNL_VERSION_MAJOR, VIRTCHNL_VERSION_MINOR
1578         };
1579 
1580         vf->vf_ver = *(struct virtchnl_version_info *)msg;
1581         /* VFs running the 1.0 API expect to get 1.0 back or they will cry. */
1582         if (VF_IS_V10(&vf->vf_ver))
1583                 info.minor = VIRTCHNL_VERSION_MINOR_NO_VF_CAPS;
1584 
1585         return ice_vc_send_msg_to_vf(vf, VIRTCHNL_OP_VERSION,
1586                                      VIRTCHNL_STATUS_SUCCESS, (u8 *)&info,
1587                                      sizeof(struct virtchnl_version_info));
1588 }
1589 
1590 /**
1591  * ice_vc_get_vf_res_msg
1592  * @vf: pointer to the VF info
1593  * @msg: pointer to the msg buffer
1594  *
1595  * called from the VF to request its resources
1596  */
1597 static int ice_vc_get_vf_res_msg(struct ice_vf *vf, u8 *msg)
1598 {
1599         enum virtchnl_status_code v_ret = VIRTCHNL_STATUS_SUCCESS;
1600         struct virtchnl_vf_resource *vfres = NULL;
1601         struct ice_pf *pf = vf->pf;
1602         struct ice_vsi *vsi;
1603         int len = 0;
1604         int ret;
1605 
1606         if (!test_bit(ICE_VF_STATE_INIT, vf->vf_states)) {
1607                 v_ret = VIRTCHNL_STATUS_ERR_PARAM;
1608                 goto err;
1609         }
1610 
1611         len = sizeof(struct virtchnl_vf_resource);
1612 
1613         vfres = devm_kzalloc(&pf->pdev->dev, len, GFP_KERNEL);
1614         if (!vfres) {
1615                 v_ret = VIRTCHNL_STATUS_ERR_NO_MEMORY;
1616                 len = 0;
1617                 goto err;
1618         }
1619         if (VF_IS_V11(&vf->vf_ver))
1620                 vf->driver_caps = *(u32 *)msg;
1621         else
1622                 vf->driver_caps = VIRTCHNL_VF_OFFLOAD_L2 |
1623                                   VIRTCHNL_VF_OFFLOAD_RSS_REG |
1624                                   VIRTCHNL_VF_OFFLOAD_VLAN;
1625 
1626         vfres->vf_cap_flags = VIRTCHNL_VF_OFFLOAD_L2;
1627         vsi = pf->vsi[vf->lan_vsi_idx];
1628         if (!vsi) {
1629                 v_ret = VIRTCHNL_STATUS_ERR_PARAM;
1630                 goto err;
1631         }
1632 
1633         if (!vsi->info.pvid)
1634                 vfres->vf_cap_flags |= VIRTCHNL_VF_OFFLOAD_VLAN;
1635 
1636         if (vf->driver_caps & VIRTCHNL_VF_OFFLOAD_RSS_PF) {
1637                 vfres->vf_cap_flags |= VIRTCHNL_VF_OFFLOAD_RSS_PF;
1638         } else {
1639                 if (vf->driver_caps & VIRTCHNL_VF_OFFLOAD_RSS_AQ)
1640                         vfres->vf_cap_flags |= VIRTCHNL_VF_OFFLOAD_RSS_AQ;
1641                 else
1642                         vfres->vf_cap_flags |= VIRTCHNL_VF_OFFLOAD_RSS_REG;
1643         }
1644 
1645         if (vf->driver_caps & VIRTCHNL_VF_OFFLOAD_RSS_PCTYPE_V2)
1646                 vfres->vf_cap_flags |= VIRTCHNL_VF_OFFLOAD_RSS_PCTYPE_V2;
1647 
1648         if (vf->driver_caps & VIRTCHNL_VF_OFFLOAD_ENCAP)
1649                 vfres->vf_cap_flags |= VIRTCHNL_VF_OFFLOAD_ENCAP;
1650 
1651         if (vf->driver_caps & VIRTCHNL_VF_OFFLOAD_ENCAP_CSUM)
1652                 vfres->vf_cap_flags |= VIRTCHNL_VF_OFFLOAD_ENCAP_CSUM;
1653 
1654         if (vf->driver_caps & VIRTCHNL_VF_OFFLOAD_RX_POLLING)
1655                 vfres->vf_cap_flags |= VIRTCHNL_VF_OFFLOAD_RX_POLLING;
1656 
1657         if (vf->driver_caps & VIRTCHNL_VF_OFFLOAD_WB_ON_ITR)
1658                 vfres->vf_cap_flags |= VIRTCHNL_VF_OFFLOAD_WB_ON_ITR;
1659 
1660         if (vf->driver_caps & VIRTCHNL_VF_OFFLOAD_REQ_QUEUES)
1661                 vfres->vf_cap_flags |= VIRTCHNL_VF_OFFLOAD_REQ_QUEUES;
1662 
1663         if (vf->driver_caps & VIRTCHNL_VF_CAP_ADV_LINK_SPEED)
1664                 vfres->vf_cap_flags |= VIRTCHNL_VF_CAP_ADV_LINK_SPEED;
1665 
1666         vfres->num_vsis = 1;
1667         /* Tx and Rx queue are equal for VF */
1668         vfres->num_queue_pairs = vsi->num_txq;
1669         vfres->max_vectors = pf->num_vf_msix;
1670         vfres->rss_key_size = ICE_VSIQF_HKEY_ARRAY_SIZE;
1671         vfres->rss_lut_size = ICE_VSIQF_HLUT_ARRAY_SIZE;
1672 
1673         vfres->vsi_res[0].vsi_id = vf->lan_vsi_num;
1674         vfres->vsi_res[0].vsi_type = VIRTCHNL_VSI_SRIOV;
1675         vfres->vsi_res[0].num_queue_pairs = vsi->num_txq;
1676         ether_addr_copy(vfres->vsi_res[0].default_mac_addr,
1677                         vf->dflt_lan_addr.addr);
1678 
1679         set_bit(ICE_VF_STATE_ACTIVE, vf->vf_states);
1680 
1681 err:
1682         /* send the response back to the VF */
1683         ret = ice_vc_send_msg_to_vf(vf, VIRTCHNL_OP_GET_VF_RESOURCES, v_ret,
1684                                     (u8 *)vfres, len);
1685 
1686         devm_kfree(&pf->pdev->dev, vfres);
1687         return ret;
1688 }
1689 
1690 /**
1691  * ice_vc_reset_vf_msg
1692  * @vf: pointer to the VF info
1693  *
1694  * called from the VF to reset itself,
1695  * unlike other virtchnl messages, PF driver
1696  * doesn't send the response back to the VF
1697  */
1698 static void ice_vc_reset_vf_msg(struct ice_vf *vf)
1699 {
1700         if (test_bit(ICE_VF_STATE_ACTIVE, vf->vf_states))
1701                 ice_reset_vf(vf, false);
1702 }
1703 
1704 /**
1705  * ice_find_vsi_from_id
1706  * @pf: the PF structure to search for the VSI
1707  * @id: ID of the VSI it is searching for
1708  *
1709  * searches for the VSI with the given ID
1710  */
1711 static struct ice_vsi *ice_find_vsi_from_id(struct ice_pf *pf, u16 id)
1712 {
1713         int i;
1714 
1715         ice_for_each_vsi(pf, i)
1716                 if (pf->vsi[i] && pf->vsi[i]->vsi_num == id)
1717                         return pf->vsi[i];
1718 
1719         return NULL;
1720 }
1721 
1722 /**
1723  * ice_vc_isvalid_vsi_id
1724  * @vf: pointer to the VF info
1725  * @vsi_id: VF relative VSI ID
1726  *
1727  * check for the valid VSI ID
1728  */
1729 static bool ice_vc_isvalid_vsi_id(struct ice_vf *vf, u16 vsi_id)
1730 {
1731         struct ice_pf *pf = vf->pf;
1732         struct ice_vsi *vsi;
1733 
1734         vsi = ice_find_vsi_from_id(pf, vsi_id);
1735 
1736         return (vsi && (vsi->vf_id == vf->vf_id));
1737 }
1738 
1739 /**
1740  * ice_vc_isvalid_q_id
1741  * @vf: pointer to the VF info
1742  * @vsi_id: VSI ID
1743  * @qid: VSI relative queue ID
1744  *
1745  * check for the valid queue ID
1746  */
1747 static bool ice_vc_isvalid_q_id(struct ice_vf *vf, u16 vsi_id, u8 qid)
1748 {
1749         struct ice_vsi *vsi = ice_find_vsi_from_id(vf->pf, vsi_id);
1750         /* allocated Tx and Rx queues should be always equal for VF VSI */
1751         return (vsi && (qid < vsi->alloc_txq));
1752 }
1753 
1754 /**
1755  * ice_vc_isvalid_ring_len
1756  * @ring_len: length of ring
1757  *
1758  * check for the valid ring count, should be multiple of ICE_REQ_DESC_MULTIPLE
1759  * or zero
1760  */
1761 static bool ice_vc_isvalid_ring_len(u16 ring_len)
1762 {
1763         return ring_len == 0 ||
1764                (ring_len >= ICE_MIN_NUM_DESC &&
1765                 ring_len <= ICE_MAX_NUM_DESC &&
1766                 !(ring_len % ICE_REQ_DESC_MULTIPLE));
1767 }
1768 
1769 /**
1770  * ice_vc_config_rss_key
1771  * @vf: pointer to the VF info
1772  * @msg: pointer to the msg buffer
1773  *
1774  * Configure the VF's RSS key
1775  */
1776 static int ice_vc_config_rss_key(struct ice_vf *vf, u8 *msg)
1777 {
1778         enum virtchnl_status_code v_ret = VIRTCHNL_STATUS_SUCCESS;
1779         struct virtchnl_rss_key *vrk =
1780                 (struct virtchnl_rss_key *)msg;
1781         struct ice_pf *pf = vf->pf;
1782         struct ice_vsi *vsi = NULL;
1783 
1784         if (!test_bit(ICE_VF_STATE_ACTIVE, vf->vf_states)) {
1785                 v_ret = VIRTCHNL_STATUS_ERR_PARAM;
1786                 goto error_param;
1787         }
1788 
1789         if (!ice_vc_isvalid_vsi_id(vf, vrk->vsi_id)) {
1790                 v_ret = VIRTCHNL_STATUS_ERR_PARAM;
1791                 goto error_param;
1792         }
1793 
1794         if (vrk->key_len != ICE_VSIQF_HKEY_ARRAY_SIZE) {
1795                 v_ret = VIRTCHNL_STATUS_ERR_PARAM;
1796                 goto error_param;
1797         }
1798 
1799         if (!test_bit(ICE_FLAG_RSS_ENA, vf->pf->flags)) {
1800                 v_ret = VIRTCHNL_STATUS_ERR_PARAM;
1801                 goto error_param;
1802         }
1803 
1804         vsi = pf->vsi[vf->lan_vsi_idx];
1805         if (!vsi) {
1806                 v_ret = VIRTCHNL_STATUS_ERR_PARAM;
1807                 goto error_param;
1808         }
1809 
1810         if (ice_set_rss(vsi, vrk->key, NULL, 0))
1811                 v_ret = VIRTCHNL_STATUS_ERR_ADMIN_QUEUE_ERROR;
1812 error_param:
1813         return ice_vc_send_msg_to_vf(vf, VIRTCHNL_OP_CONFIG_RSS_KEY, v_ret,
1814                                      NULL, 0);
1815 }
1816 
1817 /**
1818  * ice_vc_config_rss_lut
1819  * @vf: pointer to the VF info
1820  * @msg: pointer to the msg buffer
1821  *
1822  * Configure the VF's RSS LUT
1823  */
1824 static int ice_vc_config_rss_lut(struct ice_vf *vf, u8 *msg)
1825 {
1826         struct virtchnl_rss_lut *vrl = (struct virtchnl_rss_lut *)msg;
1827         enum virtchnl_status_code v_ret = VIRTCHNL_STATUS_SUCCESS;
1828         struct ice_pf *pf = vf->pf;
1829         struct ice_vsi *vsi = NULL;
1830 
1831         if (!test_bit(ICE_VF_STATE_ACTIVE, vf->vf_states)) {
1832                 v_ret = VIRTCHNL_STATUS_ERR_PARAM;
1833                 goto error_param;
1834         }
1835 
1836         if (!ice_vc_isvalid_vsi_id(vf, vrl->vsi_id)) {
1837                 v_ret = VIRTCHNL_STATUS_ERR_PARAM;
1838                 goto error_param;
1839         }
1840 
1841         if (vrl->lut_entries != ICE_VSIQF_HLUT_ARRAY_SIZE) {
1842                 v_ret = VIRTCHNL_STATUS_ERR_PARAM;
1843                 goto error_param;
1844         }
1845 
1846         if (!test_bit(ICE_FLAG_RSS_ENA, vf->pf->flags)) {
1847                 v_ret = VIRTCHNL_STATUS_ERR_PARAM;
1848                 goto error_param;
1849         }
1850 
1851         vsi = pf->vsi[vf->lan_vsi_idx];
1852         if (!vsi) {
1853                 v_ret = VIRTCHNL_STATUS_ERR_PARAM;
1854                 goto error_param;
1855         }
1856 
1857         if (ice_set_rss(vsi, NULL, vrl->lut, ICE_VSIQF_HLUT_ARRAY_SIZE))
1858                 v_ret = VIRTCHNL_STATUS_ERR_ADMIN_QUEUE_ERROR;
1859 error_param:
1860         return ice_vc_send_msg_to_vf(vf, VIRTCHNL_OP_CONFIG_RSS_LUT, v_ret,
1861                                      NULL, 0);
1862 }
1863 
1864 /**
1865  * ice_vc_get_stats_msg
1866  * @vf: pointer to the VF info
1867  * @msg: pointer to the msg buffer
1868  *
1869  * called from the VF to get VSI stats
1870  */
1871 static int ice_vc_get_stats_msg(struct ice_vf *vf, u8 *msg)
1872 {
1873         enum virtchnl_status_code v_ret = VIRTCHNL_STATUS_SUCCESS;
1874         struct virtchnl_queue_select *vqs =
1875                 (struct virtchnl_queue_select *)msg;
1876         struct ice_eth_stats stats = { 0 };
1877         struct ice_pf *pf = vf->pf;
1878         struct ice_vsi *vsi;
1879 
1880         if (!test_bit(ICE_VF_STATE_ACTIVE, vf->vf_states)) {
1881                 v_ret = VIRTCHNL_STATUS_ERR_PARAM;
1882                 goto error_param;
1883         }
1884 
1885         if (!ice_vc_isvalid_vsi_id(vf, vqs->vsi_id)) {
1886                 v_ret = VIRTCHNL_STATUS_ERR_PARAM;
1887                 goto error_param;
1888         }
1889 
1890         vsi = pf->vsi[vf->lan_vsi_idx];
1891         if (!vsi) {
1892                 v_ret = VIRTCHNL_STATUS_ERR_PARAM;
1893                 goto error_param;
1894         }
1895 
1896         ice_update_eth_stats(vsi);
1897 
1898         stats = vsi->eth_stats;
1899 
1900 error_param:
1901         /* send the response to the VF */
1902         return ice_vc_send_msg_to_vf(vf, VIRTCHNL_OP_GET_STATS, v_ret,
1903                                      (u8 *)&stats, sizeof(stats));
1904 }
1905 
1906 /**
1907  * ice_vc_ena_qs_msg
1908  * @vf: pointer to the VF info
1909  * @msg: pointer to the msg buffer
1910  *
1911  * called from the VF to enable all or specific queue(s)
1912  */
1913 static int ice_vc_ena_qs_msg(struct ice_vf *vf, u8 *msg)
1914 {
1915         enum virtchnl_status_code v_ret = VIRTCHNL_STATUS_SUCCESS;
1916         struct virtchnl_queue_select *vqs =
1917             (struct virtchnl_queue_select *)msg;
1918         struct ice_pf *pf = vf->pf;
1919         struct ice_vsi *vsi;
1920         unsigned long q_map;
1921         u16 vf_q_id;
1922 
1923         if (!test_bit(ICE_VF_STATE_ACTIVE, vf->vf_states)) {
1924                 v_ret = VIRTCHNL_STATUS_ERR_PARAM;
1925                 goto error_param;
1926         }
1927 
1928         if (!ice_vc_isvalid_vsi_id(vf, vqs->vsi_id)) {
1929                 v_ret = VIRTCHNL_STATUS_ERR_PARAM;
1930                 goto error_param;
1931         }
1932 
1933         if (!vqs->rx_queues && !vqs->tx_queues) {
1934                 v_ret = VIRTCHNL_STATUS_ERR_PARAM;
1935                 goto error_param;
1936         }
1937 
1938         if (vqs->rx_queues > ICE_MAX_BASE_QS_PER_VF ||
1939             vqs->tx_queues > ICE_MAX_BASE_QS_PER_VF) {
1940                 v_ret = VIRTCHNL_STATUS_ERR_PARAM;
1941                 goto error_param;
1942         }
1943 
1944         vsi = pf->vsi[vf->lan_vsi_idx];
1945         if (!vsi) {
1946                 v_ret = VIRTCHNL_STATUS_ERR_PARAM;
1947                 goto error_param;
1948         }
1949 
1950         /* Enable only Rx rings, Tx rings were enabled by the FW when the
1951          * Tx queue group list was configured and the context bits were
1952          * programmed using ice_vsi_cfg_txqs
1953          */
1954         q_map = vqs->rx_queues;
1955         for_each_set_bit(vf_q_id, &q_map, ICE_MAX_BASE_QS_PER_VF) {
1956                 if (!ice_vc_isvalid_q_id(vf, vqs->vsi_id, vf_q_id)) {
1957                         v_ret = VIRTCHNL_STATUS_ERR_PARAM;
1958                         goto error_param;
1959                 }
1960 
1961                 /* Skip queue if enabled */
1962                 if (test_bit(vf_q_id, vf->rxq_ena))
1963                         continue;
1964 
1965                 if (ice_vsi_ctrl_rx_ring(vsi, true, vf_q_id)) {
1966                         dev_err(&vsi->back->pdev->dev,
1967                                 "Failed to enable Rx ring %d on VSI %d\n",
1968                                 vf_q_id, vsi->vsi_num);
1969                         v_ret = VIRTCHNL_STATUS_ERR_PARAM;
1970                         goto error_param;
1971                 }
1972 
1973                 set_bit(vf_q_id, vf->rxq_ena);
1974                 vf->num_qs_ena++;
1975         }
1976 
1977         vsi = pf->vsi[vf->lan_vsi_idx];
1978         q_map = vqs->tx_queues;
1979         for_each_set_bit(vf_q_id, &q_map, ICE_MAX_BASE_QS_PER_VF) {
1980                 if (!ice_vc_isvalid_q_id(vf, vqs->vsi_id, vf_q_id)) {
1981                         v_ret = VIRTCHNL_STATUS_ERR_PARAM;
1982                         goto error_param;
1983                 }
1984 
1985                 /* Skip queue if enabled */
1986                 if (test_bit(vf_q_id, vf->txq_ena))
1987                         continue;
1988 
1989                 set_bit(vf_q_id, vf->txq_ena);
1990                 vf->num_qs_ena++;
1991         }
1992 
1993         /* Set flag to indicate that queues are enabled */
1994         if (v_ret == VIRTCHNL_STATUS_SUCCESS)
1995                 set_bit(ICE_VF_STATE_QS_ENA, vf->vf_states);
1996 
1997 error_param:
1998         /* send the response to the VF */
1999         return ice_vc_send_msg_to_vf(vf, VIRTCHNL_OP_ENABLE_QUEUES, v_ret,
2000                                      NULL, 0);
2001 }
2002 
2003 /**
2004  * ice_vc_dis_qs_msg
2005  * @vf: pointer to the VF info
2006  * @msg: pointer to the msg buffer
2007  *
2008  * called from the VF to disable all or specific
2009  * queue(s)
2010  */
2011 static int ice_vc_dis_qs_msg(struct ice_vf *vf, u8 *msg)
2012 {
2013         enum virtchnl_status_code v_ret = VIRTCHNL_STATUS_SUCCESS;
2014         struct virtchnl_queue_select *vqs =
2015             (struct virtchnl_queue_select *)msg;
2016         struct ice_pf *pf = vf->pf;
2017         struct ice_vsi *vsi;
2018         unsigned long q_map;
2019         u16 vf_q_id;
2020 
2021         if (!test_bit(ICE_VF_STATE_ACTIVE, vf->vf_states) &&
2022             !test_bit(ICE_VF_STATE_QS_ENA, vf->vf_states)) {
2023                 v_ret = VIRTCHNL_STATUS_ERR_PARAM;
2024                 goto error_param;
2025         }
2026 
2027         if (!ice_vc_isvalid_vsi_id(vf, vqs->vsi_id)) {
2028                 v_ret = VIRTCHNL_STATUS_ERR_PARAM;
2029                 goto error_param;
2030         }
2031 
2032         if (!vqs->rx_queues && !vqs->tx_queues) {
2033                 v_ret = VIRTCHNL_STATUS_ERR_PARAM;
2034                 goto error_param;
2035         }
2036 
2037         if (vqs->rx_queues > ICE_MAX_BASE_QS_PER_VF ||
2038             vqs->tx_queues > ICE_MAX_BASE_QS_PER_VF) {
2039                 v_ret = VIRTCHNL_STATUS_ERR_PARAM;
2040                 goto error_param;
2041         }
2042 
2043         vsi = pf->vsi[vf->lan_vsi_idx];
2044         if (!vsi) {
2045                 v_ret = VIRTCHNL_STATUS_ERR_PARAM;
2046                 goto error_param;
2047         }
2048 
2049         if (vqs->tx_queues) {
2050                 q_map = vqs->tx_queues;
2051 
2052                 for_each_set_bit(vf_q_id, &q_map, ICE_MAX_BASE_QS_PER_VF) {
2053                         struct ice_ring *ring = vsi->tx_rings[vf_q_id];
2054                         struct ice_txq_meta txq_meta = { 0 };
2055 
2056                         if (!ice_vc_isvalid_q_id(vf, vqs->vsi_id, vf_q_id)) {
2057                                 v_ret = VIRTCHNL_STATUS_ERR_PARAM;
2058                                 goto error_param;
2059                         }
2060 
2061                         /* Skip queue if not enabled */
2062                         if (!test_bit(vf_q_id, vf->txq_ena))
2063                                 continue;
2064 
2065                         ice_fill_txq_meta(vsi, ring, &txq_meta);
2066 
2067                         if (ice_vsi_stop_tx_ring(vsi, ICE_NO_RESET, vf->vf_id,
2068                                                  ring, &txq_meta)) {
2069                                 dev_err(&vsi->back->pdev->dev,
2070                                         "Failed to stop Tx ring %d on VSI %d\n",
2071                                         vf_q_id, vsi->vsi_num);
2072                                 v_ret = VIRTCHNL_STATUS_ERR_PARAM;
2073                                 goto error_param;
2074                         }
2075 
2076                         /* Clear enabled queues flag */
2077                         clear_bit(vf_q_id, vf->txq_ena);
2078                         vf->num_qs_ena--;
2079                 }
2080         }
2081 
2082         if (vqs->rx_queues) {
2083                 q_map = vqs->rx_queues;
2084 
2085                 for_each_set_bit(vf_q_id, &q_map, ICE_MAX_BASE_QS_PER_VF) {
2086                         if (!ice_vc_isvalid_q_id(vf, vqs->vsi_id, vf_q_id)) {
2087                                 v_ret = VIRTCHNL_STATUS_ERR_PARAM;
2088                                 goto error_param;
2089                         }
2090 
2091                         /* Skip queue if not enabled */
2092                         if (!test_bit(vf_q_id, vf->rxq_ena))
2093                                 continue;
2094 
2095                         if (ice_vsi_ctrl_rx_ring(vsi, false, vf_q_id)) {
2096                                 dev_err(&vsi->back->pdev->dev,
2097                                         "Failed to stop Rx ring %d on VSI %d\n",
2098                                         vf_q_id, vsi->vsi_num);
2099                                 v_ret = VIRTCHNL_STATUS_ERR_PARAM;
2100                                 goto error_param;
2101                         }
2102 
2103                         /* Clear enabled queues flag */
2104                         clear_bit(vf_q_id, vf->rxq_ena);
2105                         vf->num_qs_ena--;
2106                 }
2107         }
2108 
2109         /* Clear enabled queues flag */
2110         if (v_ret == VIRTCHNL_STATUS_SUCCESS && !vf->num_qs_ena)
2111                 clear_bit(ICE_VF_STATE_QS_ENA, vf->vf_states);
2112 
2113 error_param:
2114         /* send the response to the VF */
2115         return ice_vc_send_msg_to_vf(vf, VIRTCHNL_OP_DISABLE_QUEUES, v_ret,
2116                                      NULL, 0);
2117 }
2118 
2119 /**
2120  * ice_vc_cfg_irq_map_msg
2121  * @vf: pointer to the VF info
2122  * @msg: pointer to the msg buffer
2123  *
2124  * called from the VF to configure the IRQ to queue map
2125  */
2126 static int ice_vc_cfg_irq_map_msg(struct ice_vf *vf, u8 *msg)
2127 {
2128         enum virtchnl_status_code v_ret = VIRTCHNL_STATUS_SUCCESS;
2129         struct virtchnl_irq_map_info *irqmap_info;
2130         u16 vsi_id, vsi_q_id, vector_id;
2131         struct virtchnl_vector_map *map;
2132         struct ice_pf *pf = vf->pf;
2133         u16 num_q_vectors_mapped;
2134         struct ice_vsi *vsi;
2135         unsigned long qmap;
2136         int i;
2137 
2138         irqmap_info = (struct virtchnl_irq_map_info *)msg;
2139         num_q_vectors_mapped = irqmap_info->num_vectors;
2140 
2141         /* Check to make sure number of VF vectors mapped is not greater than
2142          * number of VF vectors originally allocated, and check that
2143          * there is actually at least a single VF queue vector mapped
2144          */
2145         if (!test_bit(ICE_VF_STATE_ACTIVE, vf->vf_states) ||
2146             pf->num_vf_msix < num_q_vectors_mapped ||
2147             !irqmap_info->num_vectors) {
2148                 v_ret = VIRTCHNL_STATUS_ERR_PARAM;
2149                 goto error_param;
2150         }
2151 
2152         vsi = pf->vsi[vf->lan_vsi_idx];
2153         if (!vsi) {
2154                 v_ret = VIRTCHNL_STATUS_ERR_PARAM;
2155                 goto error_param;
2156         }
2157 
2158         for (i = 0; i < num_q_vectors_mapped; i++) {
2159                 struct ice_q_vector *q_vector;
2160 
2161                 map = &irqmap_info->vecmap[i];
2162 
2163                 vector_id = map->vector_id;
2164                 vsi_id = map->vsi_id;
2165                 /* validate msg params */
2166                 if (!(vector_id < pf->hw.func_caps.common_cap
2167                     .num_msix_vectors) || !ice_vc_isvalid_vsi_id(vf, vsi_id) ||
2168                     (!vector_id && (map->rxq_map || map->txq_map))) {
2169                         v_ret = VIRTCHNL_STATUS_ERR_PARAM;
2170                         goto error_param;
2171                 }
2172 
2173                 /* No need to map VF miscellaneous or rogue vector */
2174                 if (!vector_id)
2175                         continue;
2176 
2177                 /* Subtract non queue vector from vector_id passed by VF
2178                  * to get actual number of VSI queue vector array index
2179                  */
2180                 q_vector = vsi->q_vectors[vector_id - ICE_NONQ_VECS_VF];
2181                 if (!q_vector) {
2182                         v_ret = VIRTCHNL_STATUS_ERR_PARAM;
2183                         goto error_param;
2184                 }
2185 
2186                 /* lookout for the invalid queue index */
2187                 qmap = map->rxq_map;
2188                 q_vector->num_ring_rx = 0;
2189                 for_each_set_bit(vsi_q_id, &qmap, ICE_MAX_BASE_QS_PER_VF) {
2190                         if (!ice_vc_isvalid_q_id(vf, vsi_id, vsi_q_id)) {
2191                                 v_ret = VIRTCHNL_STATUS_ERR_PARAM;
2192                                 goto error_param;
2193                         }
2194                         q_vector->num_ring_rx++;
2195                         q_vector->rx.itr_idx = map->rxitr_idx;
2196                         vsi->rx_rings[vsi_q_id]->q_vector = q_vector;
2197                         ice_cfg_rxq_interrupt(vsi, vsi_q_id, vector_id,
2198                                               q_vector->rx.itr_idx);
2199                 }
2200 
2201                 qmap = map->txq_map;
2202                 q_vector->num_ring_tx = 0;
2203                 for_each_set_bit(vsi_q_id, &qmap, ICE_MAX_BASE_QS_PER_VF) {
2204                         if (!ice_vc_isvalid_q_id(vf, vsi_id, vsi_q_id)) {
2205                                 v_ret = VIRTCHNL_STATUS_ERR_PARAM;
2206                                 goto error_param;
2207                         }
2208                         q_vector->num_ring_tx++;
2209                         q_vector->tx.itr_idx = map->txitr_idx;
2210                         vsi->tx_rings[vsi_q_id]->q_vector = q_vector;
2211                         ice_cfg_txq_interrupt(vsi, vsi_q_id, vector_id,
2212                                               q_vector->tx.itr_idx);
2213                 }
2214         }
2215 
2216 error_param:
2217         /* send the response to the VF */
2218         return ice_vc_send_msg_to_vf(vf, VIRTCHNL_OP_CONFIG_IRQ_MAP, v_ret,
2219                                      NULL, 0);
2220 }
2221 
2222 /**
2223  * ice_vc_cfg_qs_msg
2224  * @vf: pointer to the VF info
2225  * @msg: pointer to the msg buffer
2226  *
2227  * called from the VF to configure the Rx/Tx queues
2228  */
2229 static int ice_vc_cfg_qs_msg(struct ice_vf *vf, u8 *msg)
2230 {
2231         enum virtchnl_status_code v_ret = VIRTCHNL_STATUS_SUCCESS;
2232         struct virtchnl_vsi_queue_config_info *qci =
2233             (struct virtchnl_vsi_queue_config_info *)msg;
2234         struct virtchnl_queue_pair_info *qpi;
2235         u16 num_rxq = 0, num_txq = 0;
2236         struct ice_pf *pf = vf->pf;
2237         struct ice_vsi *vsi;
2238         int i;
2239 
2240         if (!test_bit(ICE_VF_STATE_ACTIVE, vf->vf_states)) {
2241                 v_ret = VIRTCHNL_STATUS_ERR_PARAM;
2242                 goto error_param;
2243         }
2244 
2245         if (!ice_vc_isvalid_vsi_id(vf, qci->vsi_id)) {
2246                 v_ret = VIRTCHNL_STATUS_ERR_PARAM;
2247                 goto error_param;
2248         }
2249 
2250         vsi = pf->vsi[vf->lan_vsi_idx];
2251         if (!vsi) {
2252                 v_ret = VIRTCHNL_STATUS_ERR_PARAM;
2253                 goto error_param;
2254         }
2255 
2256         if (qci->num_queue_pairs > ICE_MAX_BASE_QS_PER_VF ||
2257             qci->num_queue_pairs > min_t(u16, vsi->alloc_txq, vsi->alloc_rxq)) {
2258                 dev_err(&pf->pdev->dev,
2259                         "VF-%d requesting more than supported number of queues: %d\n",
2260                         vf->vf_id, min_t(u16, vsi->alloc_txq, vsi->alloc_rxq));
2261                 v_ret = VIRTCHNL_STATUS_ERR_PARAM;
2262                 goto error_param;
2263         }
2264 
2265         for (i = 0; i < qci->num_queue_pairs; i++) {
2266                 qpi = &qci->qpair[i];
2267                 if (qpi->txq.vsi_id != qci->vsi_id ||
2268                     qpi->rxq.vsi_id != qci->vsi_id ||
2269                     qpi->rxq.queue_id != qpi->txq.queue_id ||
2270                     qpi->txq.headwb_enabled ||
2271                     !ice_vc_isvalid_ring_len(qpi->txq.ring_len) ||
2272                     !ice_vc_isvalid_ring_len(qpi->rxq.ring_len) ||
2273                     !ice_vc_isvalid_q_id(vf, qci->vsi_id, qpi->txq.queue_id)) {
2274                         v_ret = VIRTCHNL_STATUS_ERR_PARAM;
2275                         goto error_param;
2276                 }
2277                 /* copy Tx queue info from VF into VSI */
2278                 if (qpi->txq.ring_len > 0) {
2279                         num_txq++;
2280                         vsi->tx_rings[i]->dma = qpi->txq.dma_ring_addr;
2281                         vsi->tx_rings[i]->count = qpi->txq.ring_len;
2282                 }
2283 
2284                 /* copy Rx queue info from VF into VSI */
2285                 if (qpi->rxq.ring_len > 0) {
2286                         num_rxq++;
2287                         vsi->rx_rings[i]->dma = qpi->rxq.dma_ring_addr;
2288                         vsi->rx_rings[i]->count = qpi->rxq.ring_len;
2289 
2290                         if (qpi->rxq.databuffer_size != 0 &&
2291                             (qpi->rxq.databuffer_size > ((16 * 1024) - 128) ||
2292                              qpi->rxq.databuffer_size < 1024)) {
2293                                 v_ret = VIRTCHNL_STATUS_ERR_PARAM;
2294                                 goto error_param;
2295                         }
2296                         vsi->rx_buf_len = qpi->rxq.databuffer_size;
2297                         vsi->rx_rings[i]->rx_buf_len = vsi->rx_buf_len;
2298                         if (qpi->rxq.max_pkt_size >= (16 * 1024) ||
2299                             qpi->rxq.max_pkt_size < 64) {
2300                                 v_ret = VIRTCHNL_STATUS_ERR_PARAM;
2301                                 goto error_param;
2302                         }
2303                 }
2304 
2305                 vsi->max_frame = qpi->rxq.max_pkt_size;
2306         }
2307 
2308         /* VF can request to configure less than allocated queues
2309          * or default allocated queues. So update the VSI with new number
2310          */
2311         vsi->num_txq = num_txq;
2312         vsi->num_rxq = num_rxq;
2313         /* All queues of VF VSI are in TC 0 */
2314         vsi->tc_cfg.tc_info[0].qcount_tx = num_txq;
2315         vsi->tc_cfg.tc_info[0].qcount_rx = num_rxq;
2316 
2317         if (ice_vsi_cfg_lan_txqs(vsi) || ice_vsi_cfg_rxqs(vsi))
2318                 v_ret = VIRTCHNL_STATUS_ERR_ADMIN_QUEUE_ERROR;
2319 
2320 error_param:
2321         /* send the response to the VF */
2322         return ice_vc_send_msg_to_vf(vf, VIRTCHNL_OP_CONFIG_VSI_QUEUES, v_ret,
2323                                      NULL, 0);
2324 }
2325 
2326 /**
2327  * ice_is_vf_trusted
2328  * @vf: pointer to the VF info
2329  */
2330 static bool ice_is_vf_trusted(struct ice_vf *vf)
2331 {
2332         return test_bit(ICE_VIRTCHNL_VF_CAP_PRIVILEGE, &vf->vf_caps);
2333 }
2334 
2335 /**
2336  * ice_can_vf_change_mac
2337  * @vf: pointer to the VF info
2338  *
2339  * Return true if the VF is allowed to change its MAC filters, false otherwise
2340  */
2341 static bool ice_can_vf_change_mac(struct ice_vf *vf)
2342 {
2343         /* If the VF MAC address has been set administratively (via the
2344          * ndo_set_vf_mac command), then deny permission to the VF to
2345          * add/delete unicast MAC addresses, unless the VF is trusted
2346          */
2347         if (vf->pf_set_mac && !ice_is_vf_trusted(vf))
2348                 return false;
2349 
2350         return true;
2351 }
2352 
2353 /**
2354  * ice_vc_handle_mac_addr_msg
2355  * @vf: pointer to the VF info
2356  * @msg: pointer to the msg buffer
2357  * @set: true if MAC filters are being set, false otherwise
2358  *
2359  * add guest MAC address filter
2360  */
2361 static int
2362 ice_vc_handle_mac_addr_msg(struct ice_vf *vf, u8 *msg, bool set)
2363 {
2364         enum virtchnl_status_code v_ret = VIRTCHNL_STATUS_SUCCESS;
2365         struct virtchnl_ether_addr_list *al =
2366             (struct virtchnl_ether_addr_list *)msg;
2367         struct ice_pf *pf = vf->pf;
2368         enum virtchnl_ops vc_op;
2369         enum ice_status status;
2370         struct ice_vsi *vsi;
2371         int mac_count = 0;
2372         int i;
2373 
2374         if (set)
2375                 vc_op = VIRTCHNL_OP_ADD_ETH_ADDR;
2376         else
2377                 vc_op = VIRTCHNL_OP_DEL_ETH_ADDR;
2378 
2379         if (!test_bit(ICE_VF_STATE_ACTIVE, vf->vf_states) ||
2380             !ice_vc_isvalid_vsi_id(vf, al->vsi_id)) {
2381                 v_ret = VIRTCHNL_STATUS_ERR_PARAM;
2382                 goto handle_mac_exit;
2383         }
2384 
2385         if (set && !ice_is_vf_trusted(vf) &&
2386             (vf->num_mac + al->num_elements) > ICE_MAX_MACADDR_PER_VF) {
2387                 dev_err(&pf->pdev->dev,
2388                         "Can't add more MAC addresses, because VF-%d is not trusted, switch the VF to trusted mode in order to add more functionalities\n",
2389                         vf->vf_id);
2390                 /* There is no need to let VF know about not being trusted
2391                  * to add more MAC addr, so we can just return success message.
2392                  */
2393                 v_ret = VIRTCHNL_STATUS_ERR_PARAM;
2394                 goto handle_mac_exit;
2395         }
2396 
2397         vsi = pf->vsi[vf->lan_vsi_idx];
2398         if (!vsi) {
2399                 v_ret = VIRTCHNL_STATUS_ERR_PARAM;
2400                 goto handle_mac_exit;
2401         }
2402 
2403         for (i = 0; i < al->num_elements; i++) {
2404                 u8 *maddr = al->list[i].addr;
2405 
2406                 if (ether_addr_equal(maddr, vf->dflt_lan_addr.addr) ||
2407                     is_broadcast_ether_addr(maddr)) {
2408                         if (set) {
2409                                 /* VF is trying to add filters that the PF
2410                                  * already added. Just continue.
2411                                  */
2412                                 dev_info(&pf->pdev->dev,
2413                                          "MAC %pM already set for VF %d\n",
2414                                          maddr, vf->vf_id);
2415                                 continue;
2416                         } else {
2417                                 /* VF can't remove dflt_lan_addr/bcast MAC */
2418                                 dev_err(&pf->pdev->dev,
2419                                         "VF can't remove default MAC address or MAC %pM programmed by PF for VF %d\n",
2420                                         maddr, vf->vf_id);
2421                                 continue;
2422                         }
2423                 }
2424 
2425                 /* check for the invalid cases and bail if necessary */
2426                 if (is_zero_ether_addr(maddr)) {
2427                         dev_err(&pf->pdev->dev,
2428                                 "invalid MAC %pM provided for VF %d\n",
2429                                 maddr, vf->vf_id);
2430                         v_ret = VIRTCHNL_STATUS_ERR_PARAM;
2431                         goto handle_mac_exit;
2432                 }
2433 
2434                 if (is_unicast_ether_addr(maddr) &&
2435                     !ice_can_vf_change_mac(vf)) {
2436                         dev_err(&pf->pdev->dev,
2437                                 "can't change unicast MAC for untrusted VF %d\n",
2438                                 vf->vf_id);
2439                         v_ret = VIRTCHNL_STATUS_ERR_PARAM;
2440                         goto handle_mac_exit;
2441                 }
2442 
2443                 /* program the updated filter list */
2444                 status = ice_vsi_cfg_mac_fltr(vsi, maddr, set);
2445                 if (status == ICE_ERR_DOES_NOT_EXIST ||
2446                     status == ICE_ERR_ALREADY_EXISTS) {
2447                         dev_info(&pf->pdev->dev,
2448                                  "can't %s MAC filters %pM for VF %d, error %d\n",
2449                                  set ? "add" : "remove", maddr, vf->vf_id,
2450                                  status);
2451                 } else if (status) {
2452                         dev_err(&pf->pdev->dev,
2453                                 "can't %s MAC filters for VF %d, error %d\n",
2454                                 set ? "add" : "remove", vf->vf_id, status);
2455                         v_ret = ice_err_to_virt_err(status);
2456                         goto handle_mac_exit;
2457                 }
2458 
2459                 mac_count++;
2460         }
2461 
2462         /* Track number of MAC filters programmed for the VF VSI */
2463         if (set)
2464                 vf->num_mac += mac_count;
2465         else
2466                 vf->num_mac -= mac_count;
2467 
2468 handle_mac_exit:
2469         /* send the response to the VF */
2470         return ice_vc_send_msg_to_vf(vf, vc_op, v_ret, NULL, 0);
2471 }
2472 
2473 /**
2474  * ice_vc_add_mac_addr_msg
2475  * @vf: pointer to the VF info
2476  * @msg: pointer to the msg buffer
2477  *
2478  * add guest MAC address filter
2479  */
2480 static int ice_vc_add_mac_addr_msg(struct ice_vf *vf, u8 *msg)
2481 {
2482         return ice_vc_handle_mac_addr_msg(vf, msg, true);
2483 }
2484 
2485 /**
2486  * ice_vc_del_mac_addr_msg
2487  * @vf: pointer to the VF info
2488  * @msg: pointer to the msg buffer
2489  *
2490  * remove guest MAC address filter
2491  */
2492 static int ice_vc_del_mac_addr_msg(struct ice_vf *vf, u8 *msg)
2493 {
2494         return ice_vc_handle_mac_addr_msg(vf, msg, false);
2495 }
2496 
2497 /**
2498  * ice_vc_request_qs_msg
2499  * @vf: pointer to the VF info
2500  * @msg: pointer to the msg buffer
2501  *
2502  * VFs get a default number of queues but can use this message to request a
2503  * different number. If the request is successful, PF will reset the VF and
2504  * return 0. If unsuccessful, PF will send message informing VF of number of
2505  * available queue pairs via virtchnl message response to VF.
2506  */
2507 static int ice_vc_request_qs_msg(struct ice_vf *vf, u8 *msg)
2508 {
2509         enum virtchnl_status_code v_ret = VIRTCHNL_STATUS_SUCCESS;
2510         struct virtchnl_vf_res_request *vfres =
2511                 (struct virtchnl_vf_res_request *)msg;
2512         u16 req_queues = vfres->num_queue_pairs;
2513         struct ice_pf *pf = vf->pf;
2514         u16 max_allowed_vf_queues;
2515         u16 tx_rx_queue_left;
2516         u16 cur_queues;
2517 
2518         if (!test_bit(ICE_VF_STATE_ACTIVE, vf->vf_states)) {
2519                 v_ret = VIRTCHNL_STATUS_ERR_PARAM;
2520                 goto error_param;
2521         }
2522 
2523         cur_queues = vf->num_vf_qs;
2524         tx_rx_queue_left = min_t(u16, ice_get_avail_txq_count(pf),
2525                                  ice_get_avail_rxq_count(pf));
2526         max_allowed_vf_queues = tx_rx_queue_left + cur_queues;
2527         if (!req_queues) {
2528                 dev_err(&pf->pdev->dev,
2529                         "VF %d tried to request 0 queues. Ignoring.\n",
2530                         vf->vf_id);
2531         } else if (req_queues > ICE_MAX_BASE_QS_PER_VF) {
2532                 dev_err(&pf->pdev->dev,
2533                         "VF %d tried to request more than %d queues.\n",
2534                         vf->vf_id, ICE_MAX_BASE_QS_PER_VF);
2535                 vfres->num_queue_pairs = ICE_MAX_BASE_QS_PER_VF;
2536         } else if (req_queues > cur_queues &&
2537                    req_queues - cur_queues > tx_rx_queue_left) {
2538                 dev_warn(&pf->pdev->dev,
2539                          "VF %d requested %u more queues, but only %u left.\n",
2540                          vf->vf_id, req_queues - cur_queues, tx_rx_queue_left);
2541                 vfres->num_queue_pairs = min_t(u16, max_allowed_vf_queues,
2542                                                ICE_MAX_BASE_QS_PER_VF);
2543         } else {
2544                 /* request is successful, then reset VF */
2545                 vf->num_req_qs = req_queues;
2546                 ice_vc_dis_vf(vf);
2547                 dev_info(&pf->pdev->dev,
2548                          "VF %d granted request of %u queues.\n",
2549                          vf->vf_id, req_queues);
2550                 return 0;
2551         }
2552 
2553 error_param:
2554         /* send the response to the VF */
2555         return ice_vc_send_msg_to_vf(vf, VIRTCHNL_OP_REQUEST_QUEUES,
2556                                      v_ret, (u8 *)vfres, sizeof(*vfres));
2557 }
2558 
2559 /**
2560  * ice_set_vf_port_vlan
2561  * @netdev: network interface device structure
2562  * @vf_id: VF identifier
2563  * @vlan_id: VLAN ID being set
2564  * @qos: priority setting
2565  * @vlan_proto: VLAN protocol
2566  *
2567  * program VF Port VLAN ID and/or QoS
2568  */
2569 int
2570 ice_set_vf_port_vlan(struct net_device *netdev, int vf_id, u16 vlan_id, u8 qos,
2571                      __be16 vlan_proto)
2572 {
2573         u16 vlanprio = vlan_id | (qos << ICE_VLAN_PRIORITY_S);
2574         struct ice_netdev_priv *np = netdev_priv(netdev);
2575         struct ice_pf *pf = np->vsi->back;
2576         struct ice_vsi *vsi;
2577         struct ice_vf *vf;
2578         int ret = 0;
2579 
2580         /* validate the request */
2581         if (vf_id >= pf->num_alloc_vfs) {
2582                 dev_err(&pf->pdev->dev, "invalid VF id: %d\n", vf_id);
2583                 return -EINVAL;
2584         }
2585 
2586         if (vlan_id > ICE_MAX_VLANID || qos > 7) {
2587                 dev_err(&pf->pdev->dev, "Invalid VF Parameters\n");
2588                 return -EINVAL;
2589         }
2590 
2591         if (vlan_proto != htons(ETH_P_8021Q)) {
2592                 dev_err(&pf->pdev->dev, "VF VLAN protocol is not supported\n");
2593                 return -EPROTONOSUPPORT;
2594         }
2595 
2596         vf = &pf->vf[vf_id];
2597         vsi = pf->vsi[vf->lan_vsi_idx];
2598         if (!test_bit(ICE_VF_STATE_INIT, vf->vf_states)) {
2599                 dev_err(&pf->pdev->dev, "VF %d in reset. Try again.\n", vf_id);
2600                 return -EBUSY;
2601         }
2602 
2603         if (le16_to_cpu(vsi->info.pvid) == vlanprio) {
2604                 /* duplicate request, so just return success */
2605                 dev_info(&pf->pdev->dev,
2606                          "Duplicate pvid %d request\n", vlanprio);
2607                 return ret;
2608         }
2609 
2610         /* If PVID, then remove all filters on the old VLAN */
2611         if (vsi->info.pvid)
2612                 ice_vsi_kill_vlan(vsi, (le16_to_cpu(vsi->info.pvid) &
2613                                   VLAN_VID_MASK));
2614 
2615         if (vlan_id || qos) {
2616                 ret = ice_vsi_manage_pvid(vsi, vlanprio, true);
2617                 if (ret)
2618                         goto error_set_pvid;
2619         } else {
2620                 ice_vsi_manage_pvid(vsi, 0, false);
2621                 vsi->info.pvid = 0;
2622         }
2623 
2624         if (vlan_id) {
2625                 dev_info(&pf->pdev->dev, "Setting VLAN %d, QOS 0x%x on VF %d\n",
2626                          vlan_id, qos, vf_id);
2627 
2628                 /* add new VLAN filter for each MAC */
2629                 ret = ice_vsi_add_vlan(vsi, vlan_id);
2630                 if (ret)
2631                         goto error_set_pvid;
2632         }
2633 
2634         /* The Port VLAN needs to be saved across resets the same as the
2635          * default LAN MAC address.
2636          */
2637         vf->port_vlan_id = le16_to_cpu(vsi->info.pvid);
2638 
2639 error_set_pvid:
2640         return ret;
2641 }
2642 
2643 /**
2644  * ice_vc_process_vlan_msg
2645  * @vf: pointer to the VF info
2646  * @msg: pointer to the msg buffer
2647  * @add_v: Add VLAN if true, otherwise delete VLAN
2648  *
2649  * Process virtchnl op to add or remove programmed guest VLAN ID
2650  */
2651 static int ice_vc_process_vlan_msg(struct ice_vf *vf, u8 *msg, bool add_v)
2652 {
2653         enum virtchnl_status_code v_ret = VIRTCHNL_STATUS_SUCCESS;
2654         struct virtchnl_vlan_filter_list *vfl =
2655             (struct virtchnl_vlan_filter_list *)msg;
2656         struct ice_pf *pf = vf->pf;
2657         bool vlan_promisc = false;
2658         struct ice_vsi *vsi;
2659         struct ice_hw *hw;
2660         int status = 0;
2661         u8 promisc_m;
2662         int i;
2663 
2664         if (!test_bit(ICE_VF_STATE_ACTIVE, vf->vf_states)) {
2665                 v_ret = VIRTCHNL_STATUS_ERR_PARAM;
2666                 goto error_param;
2667         }
2668 
2669         if (!ice_vc_isvalid_vsi_id(vf, vfl->vsi_id)) {
2670                 v_ret = VIRTCHNL_STATUS_ERR_PARAM;
2671                 goto error_param;
2672         }
2673 
2674         if (add_v && !ice_is_vf_trusted(vf) &&
2675             vf->num_vlan >= ICE_MAX_VLAN_PER_VF) {
2676                 dev_info(&pf->pdev->dev,
2677                          "VF-%d is not trusted, switch the VF to trusted mode, in order to add more VLAN addresses\n",
2678                          vf->vf_id);
2679                 /* There is no need to let VF know about being not trusted,
2680                  * so we can just return success message here
2681                  */
2682                 goto error_param;
2683         }
2684 
2685         for (i = 0; i < vfl->num_elements; i++) {
2686                 if (vfl->vlan_id[i] > ICE_MAX_VLANID) {
2687                         v_ret = VIRTCHNL_STATUS_ERR_PARAM;
2688                         dev_err(&pf->pdev->dev,
2689                                 "invalid VF VLAN id %d\n", vfl->vlan_id[i]);
2690                         goto error_param;
2691                 }
2692         }
2693 
2694         hw = &pf->hw;
2695         vsi = pf->vsi[vf->lan_vsi_idx];
2696         if (!vsi) {
2697                 v_ret = VIRTCHNL_STATUS_ERR_PARAM;
2698                 goto error_param;
2699         }
2700 
2701         if (vsi->info.pvid) {
2702                 v_ret = VIRTCHNL_STATUS_ERR_PARAM;
2703                 goto error_param;
2704         }
2705 
2706         if (ice_vsi_manage_vlan_stripping(vsi, add_v)) {
2707                 dev_err(&pf->pdev->dev,
2708                         "%sable VLAN stripping failed for VSI %i\n",
2709                          add_v ? "en" : "dis", vsi->vsi_num);
2710                 v_ret = VIRTCHNL_STATUS_ERR_PARAM;
2711                 goto error_param;
2712         }
2713 
2714         if (test_bit(ICE_VF_STATE_UC_PROMISC, vf->vf_states) ||
2715             test_bit(ICE_VF_STATE_MC_PROMISC, vf->vf_states))
2716                 vlan_promisc = true;
2717 
2718         if (add_v) {
2719                 for (i = 0; i < vfl->num_elements; i++) {
2720                         u16 vid = vfl->vlan_id[i];
2721 
2722                         if (!ice_is_vf_trusted(vf) &&
2723                             vf->num_vlan >= ICE_MAX_VLAN_PER_VF) {
2724                                 dev_info(&pf->pdev->dev,
2725                                          "VF-%d is not trusted, switch the VF to trusted mode, in order to add more VLAN addresses\n",
2726                                          vf->vf_id);
2727                                 /* There is no need to let VF know about being
2728                                  * not trusted, so we can just return success
2729                                  * message here as well.
2730                                  */
2731                                 goto error_param;
2732                         }
2733 
2734                         if (ice_vsi_add_vlan(vsi, vid)) {
2735                                 v_ret = VIRTCHNL_STATUS_ERR_PARAM;
2736                                 goto error_param;
2737                         }
2738 
2739                         vf->num_vlan++;
2740                         /* Enable VLAN pruning when VLAN is added */
2741                         if (!vlan_promisc) {
2742                                 status = ice_cfg_vlan_pruning(vsi, true, false);
2743                                 if (status) {
2744                                         v_ret = VIRTCHNL_STATUS_ERR_PARAM;
2745                                         dev_err(&pf->pdev->dev,
2746                                                 "Enable VLAN pruning on VLAN ID: %d failed error-%d\n",
2747                                                 vid, status);
2748                                         goto error_param;
2749                                 }
2750                         } else {
2751                                 /* Enable Ucast/Mcast VLAN promiscuous mode */
2752                                 promisc_m = ICE_PROMISC_VLAN_TX |
2753                                             ICE_PROMISC_VLAN_RX;
2754 
2755                                 status = ice_set_vsi_promisc(hw, vsi->idx,
2756                                                              promisc_m, vid);
2757                                 if (status) {
2758                                         v_ret = VIRTCHNL_STATUS_ERR_PARAM;
2759                                         dev_err(&pf->pdev->dev,
2760                                                 "Enable Unicast/multicast promiscuous mode on VLAN ID:%d failed error-%d\n",
2761                                                 vid, status);
2762                                 }
2763                         }
2764                 }
2765         } else {
2766                 /* In case of non_trusted VF, number of VLAN elements passed
2767                  * to PF for removal might be greater than number of VLANs
2768                  * filter programmed for that VF - So, use actual number of
2769                  * VLANS added earlier with add VLAN opcode. In order to avoid
2770                  * removing VLAN that doesn't exist, which result to sending
2771                  * erroneous failed message back to the VF
2772                  */
2773                 int num_vf_vlan;
2774 
2775                 num_vf_vlan = vf->num_vlan;
2776                 for (i = 0; i < vfl->num_elements && i < num_vf_vlan; i++) {
2777                         u16 vid = vfl->vlan_id[i];
2778 
2779                         /* Make sure ice_vsi_kill_vlan is successful before
2780                          * updating VLAN information
2781                          */
2782                         if (ice_vsi_kill_vlan(vsi, vid)) {
2783                                 v_ret = VIRTCHNL_STATUS_ERR_PARAM;
2784                                 goto error_param;
2785                         }
2786 
2787                         vf->num_vlan--;
2788                         /* Disable VLAN pruning when the last VLAN is removed */
2789                         if (!vf->num_vlan)
2790                                 ice_cfg_vlan_pruning(vsi, false, false);
2791 
2792                         /* Disable Unicast/Multicast VLAN promiscuous mode */
2793                         if (vlan_promisc) {
2794                                 promisc_m = ICE_PROMISC_VLAN_TX |
2795                                             ICE_PROMISC_VLAN_RX;
2796 
2797                                 ice_clear_vsi_promisc(hw, vsi->idx,
2798                                                       promisc_m, vid);
2799                         }
2800                 }
2801         }
2802 
2803 error_param:
2804         /* send the response to the VF */
2805         if (add_v)
2806                 return ice_vc_send_msg_to_vf(vf, VIRTCHNL_OP_ADD_VLAN, v_ret,
2807                                              NULL, 0);
2808         else
2809                 return ice_vc_send_msg_to_vf(vf, VIRTCHNL_OP_DEL_VLAN, v_ret,
2810                                              NULL, 0);
2811 }
2812 
2813 /**
2814  * ice_vc_add_vlan_msg
2815  * @vf: pointer to the VF info
2816  * @msg: pointer to the msg buffer
2817  *
2818  * Add and program guest VLAN ID
2819  */
2820 static int ice_vc_add_vlan_msg(struct ice_vf *vf, u8 *msg)
2821 {
2822         return ice_vc_process_vlan_msg(vf, msg, true);
2823 }
2824 
2825 /**
2826  * ice_vc_remove_vlan_msg
2827  * @vf: pointer to the VF info
2828  * @msg: pointer to the msg buffer
2829  *
2830  * remove programmed guest VLAN ID
2831  */
2832 static int ice_vc_remove_vlan_msg(struct ice_vf *vf, u8 *msg)
2833 {
2834         return ice_vc_process_vlan_msg(vf, msg, false);
2835 }
2836 
2837 /**
2838  * ice_vc_ena_vlan_stripping
2839  * @vf: pointer to the VF info
2840  *
2841  * Enable VLAN header stripping for a given VF
2842  */
2843 static int ice_vc_ena_vlan_stripping(struct ice_vf *vf)
2844 {
2845         enum virtchnl_status_code v_ret = VIRTCHNL_STATUS_SUCCESS;
2846         struct ice_pf *pf = vf->pf;
2847         struct ice_vsi *vsi;
2848 
2849         if (!test_bit(ICE_VF_STATE_ACTIVE, vf->vf_states)) {
2850                 v_ret = VIRTCHNL_STATUS_ERR_PARAM;
2851                 goto error_param;
2852         }
2853 
2854         vsi = pf->vsi[vf->lan_vsi_idx];
2855         if (ice_vsi_manage_vlan_stripping(vsi, true))
2856                 v_ret = VIRTCHNL_STATUS_ERR_PARAM;
2857 
2858 error_param:
2859         return ice_vc_send_msg_to_vf(vf, VIRTCHNL_OP_ENABLE_VLAN_STRIPPING,
2860                                      v_ret, NULL, 0);
2861 }
2862 
2863 /**
2864  * ice_vc_dis_vlan_stripping
2865  * @vf: pointer to the VF info
2866  *
2867  * Disable VLAN header stripping for a given VF
2868  */
2869 static int ice_vc_dis_vlan_stripping(struct ice_vf *vf)
2870 {
2871         enum virtchnl_status_code v_ret = VIRTCHNL_STATUS_SUCCESS;
2872         struct ice_pf *pf = vf->pf;
2873         struct ice_vsi *vsi;
2874 
2875         if (!test_bit(ICE_VF_STATE_ACTIVE, vf->vf_states)) {
2876                 v_ret = VIRTCHNL_STATUS_ERR_PARAM;
2877                 goto error_param;
2878         }
2879 
2880         vsi = pf->vsi[vf->lan_vsi_idx];
2881         if (!vsi) {
2882                 v_ret = VIRTCHNL_STATUS_ERR_PARAM;
2883                 goto error_param;
2884         }
2885 
2886         if (ice_vsi_manage_vlan_stripping(vsi, false))
2887                 v_ret = VIRTCHNL_STATUS_ERR_PARAM;
2888 
2889 error_param:
2890         return ice_vc_send_msg_to_vf(vf, VIRTCHNL_OP_DISABLE_VLAN_STRIPPING,
2891                                      v_ret, NULL, 0);
2892 }
2893 
2894 /**
2895  * ice_vc_process_vf_msg - Process request from VF
2896  * @pf: pointer to the PF structure
2897  * @event: pointer to the AQ event
2898  *
2899  * called from the common asq/arq handler to
2900  * process request from VF
2901  */
2902 void ice_vc_process_vf_msg(struct ice_pf *pf, struct ice_rq_event_info *event)
2903 {
2904         u32 v_opcode = le32_to_cpu(event->desc.cookie_high);
2905         s16 vf_id = le16_to_cpu(event->desc.retval);
2906         u16 msglen = event->msg_len;
2907         u8 *msg = event->msg_buf;
2908         struct ice_vf *vf = NULL;
2909         int err = 0;
2910 
2911         if (vf_id >= pf->num_alloc_vfs) {
2912                 err = -EINVAL;
2913                 goto error_handler;
2914         }
2915 
2916         vf = &pf->vf[vf_id];
2917 
2918         /* Check if VF is disabled. */
2919         if (test_bit(ICE_VF_STATE_DIS, vf->vf_states)) {
2920                 err = -EPERM;
2921                 goto error_handler;
2922         }
2923 
2924         /* Perform basic checks on the msg */
2925         err = virtchnl_vc_validate_vf_msg(&vf->vf_ver, v_opcode, msg, msglen);
2926         if (err) {
2927                 if (err == VIRTCHNL_STATUS_ERR_PARAM)
2928                         err = -EPERM;
2929                 else
2930                         err = -EINVAL;
2931         }
2932 
2933 error_handler:
2934         if (err) {
2935                 ice_vc_send_msg_to_vf(vf, v_opcode, VIRTCHNL_STATUS_ERR_PARAM,
2936                                       NULL, 0);
2937                 dev_err(&pf->pdev->dev, "Invalid message from VF %d, opcode %d, len %d, error %d\n",
2938                         vf_id, v_opcode, msglen, err);
2939                 return;
2940         }
2941 
2942         switch (v_opcode) {
2943         case VIRTCHNL_OP_VERSION:
2944                 err = ice_vc_get_ver_msg(vf, msg);
2945                 break;
2946         case VIRTCHNL_OP_GET_VF_RESOURCES:
2947                 err = ice_vc_get_vf_res_msg(vf, msg);
2948                 ice_vc_notify_vf_link_state(vf);
2949                 break;
2950         case VIRTCHNL_OP_RESET_VF:
2951                 ice_vc_reset_vf_msg(vf);
2952                 break;
2953         case VIRTCHNL_OP_ADD_ETH_ADDR:
2954                 err = ice_vc_add_mac_addr_msg(vf, msg);
2955                 break;
2956         case VIRTCHNL_OP_DEL_ETH_ADDR:
2957                 err = ice_vc_del_mac_addr_msg(vf, msg);
2958                 break;
2959         case VIRTCHNL_OP_CONFIG_VSI_QUEUES:
2960                 err = ice_vc_cfg_qs_msg(vf, msg);
2961                 break;
2962         case VIRTCHNL_OP_ENABLE_QUEUES:
2963                 err = ice_vc_ena_qs_msg(vf, msg);
2964                 ice_vc_notify_vf_link_state(vf);
2965                 break;
2966         case VIRTCHNL_OP_DISABLE_QUEUES:
2967                 err = ice_vc_dis_qs_msg(vf, msg);
2968                 break;
2969         case VIRTCHNL_OP_REQUEST_QUEUES:
2970                 err = ice_vc_request_qs_msg(vf, msg);
2971                 break;
2972         case VIRTCHNL_OP_CONFIG_IRQ_MAP:
2973                 err = ice_vc_cfg_irq_map_msg(vf, msg);
2974                 break;
2975         case VIRTCHNL_OP_CONFIG_RSS_KEY:
2976                 err = ice_vc_config_rss_key(vf, msg);
2977                 break;
2978         case VIRTCHNL_OP_CONFIG_RSS_LUT:
2979                 err = ice_vc_config_rss_lut(vf, msg);
2980                 break;
2981         case VIRTCHNL_OP_GET_STATS:
2982                 err = ice_vc_get_stats_msg(vf, msg);
2983                 break;
2984         case VIRTCHNL_OP_ADD_VLAN:
2985                 err = ice_vc_add_vlan_msg(vf, msg);
2986                 break;
2987         case VIRTCHNL_OP_DEL_VLAN:
2988                 err = ice_vc_remove_vlan_msg(vf, msg);
2989                 break;
2990         case VIRTCHNL_OP_ENABLE_VLAN_STRIPPING:
2991                 err = ice_vc_ena_vlan_stripping(vf);
2992                 break;
2993         case VIRTCHNL_OP_DISABLE_VLAN_STRIPPING:
2994                 err = ice_vc_dis_vlan_stripping(vf);
2995                 break;
2996         case VIRTCHNL_OP_UNKNOWN:
2997         default:
2998                 dev_err(&pf->pdev->dev, "Unsupported opcode %d from VF %d\n",
2999                         v_opcode, vf_id);
3000                 err = ice_vc_send_msg_to_vf(vf, v_opcode,
3001                                             VIRTCHNL_STATUS_ERR_NOT_SUPPORTED,
3002                                             NULL, 0);
3003                 break;
3004         }
3005         if (err) {
3006                 /* Helper function cares less about error return values here
3007                  * as it is busy with pending work.
3008                  */
3009                 dev_info(&pf->pdev->dev,
3010                          "PF failed to honor VF %d, opcode %d, error %d\n",
3011                          vf_id, v_opcode, err);
3012         }
3013 }
3014 
3015 /**
3016  * ice_get_vf_cfg
3017  * @netdev: network interface device structure
3018  * @vf_id: VF identifier
3019  * @ivi: VF configuration structure
3020  *
3021  * return VF configuration
3022  */
3023 int
3024 ice_get_vf_cfg(struct net_device *netdev, int vf_id, struct ifla_vf_info *ivi)
3025 {
3026         struct ice_netdev_priv *np = netdev_priv(netdev);
3027         struct ice_vsi *vsi = np->vsi;
3028         struct ice_pf *pf = vsi->back;
3029         struct ice_vf *vf;
3030 
3031         /* validate the request */
3032         if (vf_id >= pf->num_alloc_vfs) {
3033                 netdev_err(netdev, "invalid VF id: %d\n", vf_id);
3034                 return -EINVAL;
3035         }
3036 
3037         vf = &pf->vf[vf_id];
3038         vsi = pf->vsi[vf->lan_vsi_idx];
3039 
3040         if (!test_bit(ICE_VF_STATE_INIT, vf->vf_states)) {
3041                 netdev_err(netdev, "VF %d in reset. Try again.\n", vf_id);
3042                 return -EBUSY;
3043         }
3044 
3045         ivi->vf = vf_id;
3046         ether_addr_copy(ivi->mac, vf->dflt_lan_addr.addr);
3047 
3048         /* VF configuration for VLAN and applicable QoS */
3049         ivi->vlan = le16_to_cpu(vsi->info.pvid) & ICE_VLAN_M;
3050         ivi->qos = (le16_to_cpu(vsi->info.pvid) & ICE_PRIORITY_M) >>
3051                     ICE_VLAN_PRIORITY_S;
3052 
3053         ivi->trusted = vf->trusted;
3054         ivi->spoofchk = vf->spoofchk;
3055         if (!vf->link_forced)
3056                 ivi->linkstate = IFLA_VF_LINK_STATE_AUTO;
3057         else if (vf->link_up)
3058                 ivi->linkstate = IFLA_VF_LINK_STATE_ENABLE;
3059         else
3060                 ivi->linkstate = IFLA_VF_LINK_STATE_DISABLE;
3061         ivi->max_tx_rate = vf->tx_rate;
3062         ivi->min_tx_rate = 0;
3063         return 0;
3064 }
3065 
3066 /**
3067  * ice_set_vf_spoofchk
3068  * @netdev: network interface device structure
3069  * @vf_id: VF identifier
3070  * @ena: flag to enable or disable feature
3071  *
3072  * Enable or disable VF spoof checking
3073  */
3074 int ice_set_vf_spoofchk(struct net_device *netdev, int vf_id, bool ena)
3075 {
3076         struct ice_netdev_priv *np = netdev_priv(netdev);
3077         struct ice_vsi *vsi = np->vsi;
3078         struct ice_pf *pf = vsi->back;
3079         struct ice_vsi_ctx *ctx;
3080         enum ice_status status;
3081         struct ice_vf *vf;
3082         int ret = 0;
3083 
3084         /* validate the request */
3085         if (vf_id >= pf->num_alloc_vfs) {
3086                 netdev_err(netdev, "invalid VF id: %d\n", vf_id);
3087                 return -EINVAL;
3088         }
3089 
3090         vf = &pf->vf[vf_id];
3091         if (!test_bit(ICE_VF_STATE_INIT, vf->vf_states)) {
3092                 netdev_err(netdev, "VF %d in reset. Try again.\n", vf_id);
3093                 return -EBUSY;
3094         }
3095 
3096         if (ena == vf->spoofchk) {
3097                 dev_dbg(&pf->pdev->dev, "VF spoofchk already %s\n",
3098                         ena ? "ON" : "OFF");
3099                 return 0;
3100         }
3101 
3102         ctx = devm_kzalloc(&pf->pdev->dev, sizeof(*ctx), GFP_KERNEL);
3103         if (!ctx)
3104                 return -ENOMEM;
3105 
3106         ctx->info.valid_sections = cpu_to_le16(ICE_AQ_VSI_PROP_SECURITY_VALID);
3107 
3108         if (ena) {
3109                 ctx->info.sec_flags |= ICE_AQ_VSI_SEC_FLAG_ENA_MAC_ANTI_SPOOF;
3110                 ctx->info.sw_flags2 |= ICE_AQ_VSI_SW_FLAG_RX_PRUNE_EN_M;
3111         }
3112 
3113         status = ice_update_vsi(&pf->hw, vsi->idx, ctx, NULL);
3114         if (status) {
3115                 dev_dbg(&pf->pdev->dev,
3116                         "Error %d, failed to update VSI* parameters\n", status);
3117                 ret = -EIO;
3118                 goto out;
3119         }
3120 
3121         vf->spoofchk = ena;
3122         vsi->info.sec_flags = ctx->info.sec_flags;
3123         vsi->info.sw_flags2 = ctx->info.sw_flags2;
3124 out:
3125         devm_kfree(&pf->pdev->dev, ctx);
3126         return ret;
3127 }
3128 
3129 /**
3130  * ice_set_vf_mac
3131  * @netdev: network interface device structure
3132  * @vf_id: VF identifier
3133  * @mac: MAC address
3134  *
3135  * program VF MAC address
3136  */
3137 int ice_set_vf_mac(struct net_device *netdev, int vf_id, u8 *mac)
3138 {
3139         struct ice_netdev_priv *np = netdev_priv(netdev);
3140         struct ice_vsi *vsi = np->vsi;
3141         struct ice_pf *pf = vsi->back;
3142         struct ice_vf *vf;
3143         int ret = 0;
3144 
3145         /* validate the request */
3146         if (vf_id >= pf->num_alloc_vfs) {
3147                 netdev_err(netdev, "invalid VF id: %d\n", vf_id);
3148                 return -EINVAL;
3149         }
3150 
3151         vf = &pf->vf[vf_id];
3152         if (!test_bit(ICE_VF_STATE_INIT, vf->vf_states)) {
3153                 netdev_err(netdev, "VF %d in reset. Try again.\n", vf_id);
3154                 return -EBUSY;
3155         }
3156 
3157         if (is_zero_ether_addr(mac) || is_multicast_ether_addr(mac)) {
3158                 netdev_err(netdev, "%pM not a valid unicast address\n", mac);
3159                 return -EINVAL;
3160         }
3161 
3162         /* copy MAC into dflt_lan_addr and trigger a VF reset. The reset
3163          * flow will use the updated dflt_lan_addr and add a MAC filter
3164          * using ice_add_mac. Also set pf_set_mac to indicate that the PF has
3165          * set the MAC address for this VF.
3166          */
3167         ether_addr_copy(vf->dflt_lan_addr.addr, mac);
3168         vf->pf_set_mac = true;
3169         netdev_info(netdev,
3170                     "MAC on VF %d set to %pM. VF driver will be reinitialized\n",
3171                     vf_id, mac);
3172 
3173         ice_vc_dis_vf(vf);
3174         return ret;
3175 }
3176 
3177 /**
3178  * ice_set_vf_trust
3179  * @netdev: network interface device structure
3180  * @vf_id: VF identifier
3181  * @trusted: Boolean value to enable/disable trusted VF
3182  *
3183  * Enable or disable a given VF as trusted
3184  */
3185 int ice_set_vf_trust(struct net_device *netdev, int vf_id, bool trusted)
3186 {
3187         struct ice_netdev_priv *np = netdev_priv(netdev);
3188         struct ice_vsi *vsi = np->vsi;
3189         struct ice_pf *pf = vsi->back;
3190         struct ice_vf *vf;
3191 
3192         /* validate the request */
3193         if (vf_id >= pf->num_alloc_vfs) {
3194                 dev_err(&pf->pdev->dev, "invalid VF id: %d\n", vf_id);
3195                 return -EINVAL;
3196         }
3197 
3198         vf = &pf->vf[vf_id];
3199         if (!test_bit(ICE_VF_STATE_INIT, vf->vf_states)) {
3200                 dev_err(&pf->pdev->dev, "VF %d in reset. Try again.\n", vf_id);
3201                 return -EBUSY;
3202         }
3203 
3204         /* Check if already trusted */
3205         if (trusted == vf->trusted)
3206                 return 0;
3207 
3208         vf->trusted = trusted;
3209         ice_vc_dis_vf(vf);
3210         dev_info(&pf->pdev->dev, "VF %u is now %strusted\n",
3211                  vf_id, trusted ? "" : "un");
3212 
3213         return 0;
3214 }
3215 
3216 /**
3217  * ice_set_vf_link_state
3218  * @netdev: network interface device structure
3219  * @vf_id: VF identifier
3220  * @link_state: required link state
3221  *
3222  * Set VF's link state, irrespective of physical link state status
3223  */
3224 int ice_set_vf_link_state(struct net_device *netdev, int vf_id, int link_state)
3225 {
3226         struct ice_netdev_priv *np = netdev_priv(netdev);
3227         struct ice_pf *pf = np->vsi->back;
3228         struct virtchnl_pf_event pfe = { 0 };
3229         struct ice_link_status *ls;
3230         struct ice_vf *vf;
3231         struct ice_hw *hw;
3232 
3233         if (vf_id >= pf->num_alloc_vfs) {
3234                 dev_err(&pf->pdev->dev, "Invalid VF Identifier %d\n", vf_id);
3235                 return -EINVAL;
3236         }
3237 
3238         vf = &pf->vf[vf_id];
3239         hw = &pf->hw;
3240         ls = &pf->hw.port_info->phy.link_info;
3241 
3242         if (!test_bit(ICE_VF_STATE_INIT, vf->vf_states)) {
3243                 dev_err(&pf->pdev->dev, "vf %d in reset. Try again.\n", vf_id);
3244                 return -EBUSY;
3245         }
3246 
3247         pfe.event = VIRTCHNL_EVENT_LINK_CHANGE;
3248         pfe.severity = PF_EVENT_SEVERITY_INFO;
3249 
3250         switch (link_state) {
3251         case IFLA_VF_LINK_STATE_AUTO:
3252                 vf->link_forced = false;
3253                 vf->link_up = ls->link_info & ICE_AQ_LINK_UP;
3254                 break;
3255         case IFLA_VF_LINK_STATE_ENABLE:
3256                 vf->link_forced = true;
3257                 vf->link_up = true;
3258                 break;
3259         case IFLA_VF_LINK_STATE_DISABLE:
3260                 vf->link_forced = true;
3261                 vf->link_up = false;
3262                 break;
3263         default:
3264                 return -EINVAL;
3265         }
3266 
3267         if (vf->link_forced)
3268                 ice_set_pfe_link_forced(vf, &pfe, vf->link_up);
3269         else
3270                 ice_set_pfe_link(vf, &pfe, ls->link_speed, vf->link_up);
3271 
3272         /* Notify the VF of its new link state */
3273         ice_aq_send_msg_to_vf(hw, vf->vf_id, VIRTCHNL_OP_EVENT,
3274                               VIRTCHNL_STATUS_SUCCESS, (u8 *)&pfe,
3275                               sizeof(pfe), NULL);
3276 
3277         return 0;
3278 }